Electronic Trip Molded Case
Circuit Breakers
LE, LX, LXI, ME, MX, NE, NX, PE and PX
Circuit Breakers Only
Class 602 Catalog
CONTENTS
Schneider Electric Brands
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MICROLOGIC® Trip Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Circuit Breaker Specifics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Trip Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Index of Catalog Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Table of Contents
TABLE OF CONTENTS
SECTION 1—GENERAL INFORMATION .................................................................................................................7
Introduction ...........................................................................................................................................................7
Also See . . . .....................................................................................................................................................7
Standards .........................................................................................................................................................8
Why Use Electronic Trip Molded Case Circuit Breakers? ................................................................................8
What Do These Benefits Mean to a Customer? ..............................................................................................8
Specifications ........................................................................................................................................................9
Circuit Breaker Ratings .........................................................................................................................................9
Voltage Ratings ................................................................................................................................................9
Ampere Ratings ...............................................................................................................................................9
Continuous Current Rating ..............................................................................................................................9
Frequency Rating .............................................................................................................................................9
Interrupting Rating .........................................................................................................................................10
Withstand Rating ............................................................................................................................................10
100% Rating ..................................................................................................................................................10
Ambient Temperature Rating .........................................................................................................................10
Other Features ....................................................................................................................................................11
Trip System ....................................................................................................................................................11
Internal Operating Mechanism .......................................................................................................................11
Push-to-trip Button .........................................................................................................................................11
Instantaneous OFF Feature ...........................................................................................................................11
Circuit Breaker Mounting ...............................................................................................................................12
Circuit Breaker Connections ..........................................................................................................................12
Testing Requirements .........................................................................................................................................13
Overview ........................................................................................................................................................13
Limited Available Fault Current Tests ............................................................................................................13
High Available Fault Current Tests ................................................................................................................14
Maintenance and Testing ....................................................................................................................................14
Inspection and Preventative Maintenance .....................................................................................................14
Performance and Verification Testing ............................................................................................................14
SECTION 2—MICROLOGIC TRIP SYSTEMS BASED ON LE, LX, LXI, ME, MX, NE, NX, PE AND PX
CIRCUIT BREAKERS ..............................................................................................................................................15
RMS Sensing ......................................................................................................................................................15
Rating Plugs ........................................................................................................................................................16
Multiplier .........................................................................................................................................................16
Ammeter/Trip Indicator .......................................................................................................................................16
Overview ........................................................................................................................................................16
Memory Feature .............................................................................................................................................17
Ground-Fault Detection ..................................................................................................................................17
Trip Characteristics ........................................................................................................................................17
Standard-Function Trip Unit ................................................................................................................................18
Overview ........................................................................................................................................................18
Long-time Trip Functions ...............................................................................................................................18
Short-time Trip Functions ...............................................................................................................................19
Instantaneous Trip Function ..........................................................................................................................19
Ground-fault Trip Functions ...........................................................................................................................19
Full-Function Trip Unit .........................................................................................................................................20
Overview ........................................................................................................................................................20
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Electronic Trip Molded Case Circuit Breakers
Table of Contents
Long-Time Trip Functions ............................................................................................................................. 20
Short-Time Trip Functions ............................................................................................................................ 21
Instantaneous Trip ........................................................................................................................................ 21
Ground-Fault Trip .......................................................................................................................................... 21
Ground-fault Alarm ..............................................................................................................................................22
Additional Settings ............................................................................................................................................. 22
SECTION 3—CIRCUIT BREAKER SPECIFICS ..................................................................................................... 23
Catalog Numbering System ............................................................................................................................... 23
LE, LX and LXI 600 A Frame Circuit Breakers .................................................................................................. 24
Interrupting Ratings ....................................................................................................................................... 24
Lug Information ............................................................................................................................................. 24
Continuous Current Ratings .......................................................................................................................... 25
Accessories ................................................................................................................................................... 25
Control Wiring ............................................................................................................................................... 25
ME and MX 800 A Frame Circuit Breakers ........................................................................................................ 26
Interrupting Ratings ....................................................................................................................................... 26
Continuous Current Ratings .......................................................................................................................... 27
Lug Information ............................................................................................................................................. 27
Accessories ................................................................................................................................................... 27
Control Wiring ............................................................................................................................................... 27
NE and NX 1200 A Frame Circuit Breaker ........................................................................................................ 28
Interrupting Ratings ....................................................................................................................................... 28
Continuous Current Ratings .......................................................................................................................... 28
Lug Information ............................................................................................................................................. 29
Accessories ................................................................................................................................................... 29
Control Wiring ............................................................................................................................................... 29
PE and PX 2500 A Frame Circuit Breakers ....................................................................................................... 30
Interrupting Ratings ....................................................................................................................................... 30
Continuous Current Ratings .......................................................................................................................... 31
Terminations ................................................................................................................................................. 31
Terminal Pad Usage ..................................................................................................................................... 31
Accessories ................................................................................................................................................... 32
Control Wiring ............................................................................................................................................... 32
SECTION 4—ACCESSORIES ................................................................................................................................ 33
Factory-Installed Accessories ............................................................................................................................ 33
Field-Installed Accessories ................................................................................................................................ 33
Shunt Trip ..................................................................................................................................................... 34
Undervoltage Trip ......................................................................................................................................... 35
Undervoltage Trip Time-Delay Unit ............................................................................................................... 36
Auxiliary Switch ............................................................................................................................................. 36
Alarm Switch ................................................................................................................................................. 36
Circuit Breaker Terminations ............................................................................................................................. 37
Mechanical Lugs ........................................................................................................................................... 37
Compression Lugs ........................................................................................................................................ 38
Power Distribution Connectors ..................................................................................................................... 38
CBA I-LINE® Jaw Configuration ................................................................................................................... 38
Control Wire Termination .............................................................................................................................. 38
Other Accessories .............................................................................................................................................. 38
Electric Joint Compound ............................................................................................................................... 38
Rating Plugs .................................................................................................................................................. 38
Trip Indicator ................................................................................................................................................. 39
Ammeter/Trip Indicator ................................................................................................................................. 39
4
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Electronic Trip Molded Case Circuit Breakers
Table of Contents
Communications Adapter ...............................................................................................................................40
Electrical Operators .......................................................................................................................................40
Handle Accessories ............................................................................................................................................41
Handle Extensions .........................................................................................................................................41
Handle Interlocking ........................................................................................................................................41
Handle Padlocks ............................................................................................................................................41
Neutral Current Transformers ........................................................................................................................41
Restraint Interface Modules ...........................................................................................................................42
Trip Unit Seals ...............................................................................................................................................42
Universal Test Set ..........................................................................................................................................42
APPENDIX A—DIMENSIONS .................................................................................................................................43
LE, LX and LXI Circuit Breakers .........................................................................................................................43
ME and MX Circuit Breakers ...............................................................................................................................44
NE and NX Circuit Breakers ...............................................................................................................................45
PE and PX Circuit Breakers ................................................................................................................................47
APPENDIX B—TRIP CURVES ................................................................................................................................53
LE, LX and LXI Circuit Breakers .........................................................................................................................54
ME and MX Circuit Breakers ...............................................................................................................................61
NE and NX Circuit Breakers ...............................................................................................................................67
PE and PX Circuit Breakers ................................................................................................................................72
GLOSSARY .............................................................................................................................................................85
INDEX OF CATALOG NUMBERS ...........................................................................................................................89
INDEX ......................................................................................................................................................................93
5
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Electronic Trip Molded Case Circuit Breakers
Table of Contents
6
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
SECTION 1—GENERAL INFORMATION
INTRODUCTION
Note: This manual includes information about LE, LX, LXI, ME, MX, NE, NX, PE and PX circuit
breakers only. For information on new P and R-frame circuit breakers with new style MICROLOGIC®
trip units, see the class 0612 catalog.
These electronic trip molded case circuit breakers are designed to protect electrical systems from
damage caused by overloads, short circuits and ground faults. All circuit breakers are designed to
open and close a circuit by nonautomatic means, and to open the circuit automatically on a
predetermined overcurrent. Electronic trip circuit breakers can also:
— Enhance coordination by their adjustability
—
Provide integral ground-fault protection
—
Provide capacity for future growth
— Provide zone-selective interlocking for increased selectivity in the electrical system
Electronic trip molded case circuit breakers manufactured by Square D use the MICROLOGIC®
electronic trip system to sense overcurrents and trip the circuit breaker. Square D makes two types of
electronic trip units: full-function trip systems and standard-function trip systems.
■
Section 1—General Information, provides an overview of electronic trip molded case circuit
breakers.
■
Section 2—MICROLOGIC Trip Systems Based On LE, LX, LXI, ME, MX, NE, NX, PE and PX
Circuit Breakers, provides information about the electronic trip systems used in LE, LX, LXI, ME,
MX, NE, NX, PE and PX circuit breakers only.
■
Section 3—Circuit Breaker Specifics, provides application information about electronic trip
circuit breakers by catalog prefix.
■
Section 4—Accessories, lists the accessories available for use with electronic trip circuit breakers.
■
Appendix A—Dimensions.
■
Appendix B—Trip Curves.
Table 1.
Also See . . .
MICROLOGIC Trip Unit Features
Standard-Function Circuit Breakers
Full-Function Circuit Breakers
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
80% rated
True root-mean-square (rms) sensing
100-2500 A continuous current ratings
LSI, LSIG trip configurations
Interchangeable rating plugs
Overload indicating light
Integral ground-fault protection and testing option
Local electronic trip indicator option
Local current meter option
Universal test set available
Neutral current transformer for 4-wire systems available
100% rated
True root-mean-square (rms) sensing
100-2500 A continuous current ratings
LI, LIG, LS(I), LS(I)G trip configurations
Interchangeable rating plugs
Overload indicating light
Short-time withstand rating
Defeatable instantaneous feature option (on LS trip only)
Integral ground-fault protection and testing option
Integral ground-fault alarm (no trip) option
Zone-selective interlocking
Local electronic trip indicator
Local current meter
Universal test set available
Neutral current transformer for 4-wire systems available
POWERLOGIC® communications
For information on other types of molded case circuit breakers manufactured by Square D, See
Thermal-Magnetic and Magnetic Only Molded Case Circuit Breakers Catalog 0601CT9101.
7
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© 1995–2002 Schneider Electric All Rights Reserved
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Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
Standards
Square D electronic trip molded case circuit breakers are manufactured and tested in accordance with
the following standards:
•
•
•
•
•
UL 489
NEMA AB-1-1993
CSA Standard 22.5
IEC 60947-2
Federal Specification W-C-375B/GEN as Class 11a, 11b, 12a, 12b, and 13a, 13b
Circuit breakers are applied according to guidelines detailed in the National Electrical Code (NEC) and
other local electrical wiring codes.
Why Use
Electronic Trip
Molded Case
Circuit Breakers?
MICROLOGIC® electronic trip circuit breakers provide the same basic functions as standard thermalmagnetic circuit breakers. Both type of circuit breakers:
•
•
•
•
provide overload and short-circuit protection.
are true rms sensing devices.
provide means to manually disconnect power to the circuit.
meet UL, CSA, NEMA and IEC standards.
However, MICROLOGIC electronic trip circuit breakers offer a variety of benefits in addition to these
basic functions. MICROLOGIC circuit breakers can:
•
•
•
•
provide adjustability for enhanced coordination.
provide integral ground fault protection or alarm.
measure and report inherent ground-fault leakage.
provide capacity for future growth using:
— rating plugs.
— long-time pickup switch.
— 100% rated full-function trip system.
•
•
What Do These
Benefits Mean to a
Customer?
be provided with zone-selective interlocking to reduce fault stress on the electrical system.
be provided with power monitoring communications.
MICROLOGIC® circuit breakers give the customer more versatility to achieve coordination with features
such as adjustable pickup and delay points, interchangeable rating plugs and withstand ratings.
Features such as universally interchangeable rating plugs, adjustable long-time pickups and 100%
ratings provide capacity for future growth. Integral ground-fault sensing capabilities mean that there
are fewer parts and pieces to buy, mount and wire.
Square D offers products with integral ground-fault protection which trip when a ground-fault is
detected as well as products with integral ground-fault alarm which do not trip but send an alarm when
a ground fault is detected.
MICROLOGIC full-function circuit breakers also offer the customer true power management system
solutions through communications. The full-function trip units can communicate with other circuit
breakers in the system and also with a power monitoring system.
Communication between circuit breakers allows zone-selective interlocking (ZSI) between circuit
breakers at different levels in the system. ZSI reduces fault stress by allowing the upstream circuit
breaker closest to the fault to ignore its preset delay time and trip without any intentional delay on a
short circuit or ground fault. For more information on ZSI, see Application Guide 0600SC9102,
Reducing Fault Stress with Zone-selective Interlocking.
Communication with a power monitoring system through a POWERLOGIC® communications link
allows a ground fault to be reported without interrupting power to the system. It also allows the power
monitoring system to remotely report power usage, current flow and trip history. For more information
on POWERLOGIC system capabilities, See publication 3050IM9101, POWERLOGIC Product
Interface for MICROLOGIC Circuit Breakers.
8
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06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
SPECIFICATIONS
Electronic trip molded case circuit breakers have a molded case made of a glass-reinforced insulating
material that provides high dielectric strength. These circuit breakers:
•
•
•
•
•
Share common tripping of all poles
Can be mounted and operated in any position
Meet the requirements of NEC Section 240-6 by providing a means to seal the rating plug and trip
unit adjustments
Are equipped with an externally accessible test port for use with a Universal Test Set
Are fully tested, UL Listed and CSA certified for reverse connection without restrictive LINE or
LOAD markings. The L-, M-, N-, and P-frame circuit breakers are also IEC certified
CIRCUIT BREAKER RATINGS
Voltage Ratings
Voltage ratings indicate the maximum voltage for the electrical system on which the circuit breaker can
be applied. All Square D electronic trip molded case circuit breakers are designed to be applied on
systems rated 600 Vac or less. They are not designed for use on dc systems.
Ampere Ratings
The ampere rating of an electronic trip circuit breaker is the maximum current that a circuit breaker can
carry. It is determined by the mathematical equation:
Ampere Rating (P) = Sensor Size (S) × Rating Plug (%)
•
•
The circuit breaker sensor size is the maximum ampere rating possible for a specific circuit
breaker. This value is based on the size of the current sensor inside the circuit breaker. (Current
sensors are an integral part of the circuit breaker and cannot be removed or replaced.)
The rating plug varies the circuit breaker ampere rating as a function of its sensor size. (The rating
plug catalog number is ARPXXX, with XXX being the multiplier value.) This multiplier value is
printed on the faceplate of the rating plug along with the mathematical equation used to obtain the
ampere rating.
Note: The maximum ampere rating a circuit breaker family can carry is called the frame size. Sensor
size is less than or equal to frame size.
Continuous
Current Rating
The continuous current rating of an electronic trip circuit breaker is determined by the equation:
Continuous Current Rating = Ampere Rating (P) × Long-time Setting
•
•
Frequency Rating
The circuit breaker ampere rating (P) is found by multiplying the circuit breaker sensor size by the
rating plug multiplier.
The long-time pickup switch varies the circuit breaker continuous current rating as a multiple of the
ampere rating. Switch positions are adjustable from 0.5 to 1.0.
Square D circuit breakers can be applied on 50 and 60 Hz systems without rerating. Electronic trip
circuit breakers are recommended for applications only on systems at 50/60 Hz. These circuit breakers
have not been evaluated at any other frequency.
9
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Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
Interrupting Rating
The interrupting rating is the highest current at rated voltage the circuit breaker is designed to safely
interrupt under standard test conditions. Circuit breakers must be selected with interrupting ratings
equal to or greater than the available short-circuit current at the point where the circuit breaker is
applied to the system (unless it is a branch device in a series rated combination). Interrupting ratings
are shown on the faceplate of the circuit breaker.
Table 2.
Interrupting Ratings
Circuit Breaker
Withstand Rating
IEC 947-2 Rating
415/240 Vac
UL/CSA
240 Vac
480 Vac
600 Vac
Icu
Ics
LE, LEL, LX, LXL
100 kA
65 kA
35 kA
65 kA
65 kA
LXI, LXIL
200 kA
200 kA
100 kA
65 kA
65 kA
ME, MEL, MX, MXL
65 kA
65 kA
25 kA
65 kA
33 kA
NE, NEL, NX, NXL
65 kA
65 kA
25 kA
50 kA
50 kA
PEF, PXF
125 kA
100 kA
65 kA
70 kA
53 kA
The short-time withstand rating of a circuit breaker is the level of rms symmetrical current that a circuit
breaker can carry with the contacts in a closed position for a stated period of time (usually 30 cycles).
The withstand rating is used to improve coordination by maximizing the current level at which the
circuit breaker trips with no intentional delay. For more information on coordination using withstand
ratings, See Data Bulletin 0600DB0105, Circuit Breaker Characteristic Trip Curves and Coordination.
Note: It is recommended that a system coordination study be done for optimum circuit breaker
coordination.
100% Rating
Full-function electronic trip circuit breakers (except the 2500 A PE and 600 A LE circuit breakers) are
UL Listed to be applied at up to 100% of their continuous current rating.
Because of the additional heat generated when applying circuit breakers at 100% of continuous
current rating, the use of specially designed enclosures and 90°C rated wire is required.
Table 3.
Circuit Breaker Enclosure Sizes
Circuit Breaker
Enclosure Size (H × W × D)
LE
52 × 20 × 7-1/2 in (1321 × 508 × 190 mm)
ME
52 × 22-1/2 × 14-1/2 in (1321 × 572 × 368 mm)
NE
52 × 22-1/2 × 14-1/2 in (1321 × 572 × 368 mm)
PE
45 × 36 × 24 in (1143 × 914 × 610 mm)
Markings on the circuit breaker indicate minimum enclosure size and ventilation specifications
required. The 90°C wire must be sized according to the ampacities of the 75°C wire column in the
NEC. Circuit breakers with 100% ratings can also be used in applications requiring only 80%
continuous loading.
Ambient
Temperature
Rating
To meet the requirements of UL Standard 489, molded case circuit breakers are designed, built and
calibrated for use on 50/60 Hz ac systems in a 40°C ambient environment. Electronic trip circuit
breakers, however, are designed to react only to the magnitude of the current flowing through the
circuit breaker. MICROLOGIC® electronic trip circuit breakers are inherently ambient insensitive in the
range of -10°C to +60°C.
10
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06/02
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Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
OTHER FEATURES
Trip System
The trip system causes the circuit breaker to open automatically under overload, short-circuit or groundfault conditions. The MICROLOGIC trip system consists of the current sensors, a microprocessor-based
trip unit, and a tripping coil. The tripping coil is a flux transfer solenoid which requires no external power
source. All MICROLOGIC protective functions are completely fault powered. The trip system operation
and adjustments are described on page 15.
Figure 1.
MICROLOGIC Trip System
06023006
Trip Coil
Microprocessor
Trip Unit
Switches
Trip Indicator
Current Sensor
(One per pole)
Internal Operating
Mechanism
Square D circuit breakers have a single operating handle that acts directly through the operating
mechanism against the contact arms. Multi-pole circuit breakers have a common trip bar for positive
action of all poles on manual and automatic operation.
These circuit breakers have a trip-free mechanism that allows them to trip even though the operating
handle may be restricted (by a handle operating mechanism or a motor operator) in the ON position. If
not restricted, the operating handle moves to a position between ON and OFF when the circuit breaker
is tripped.
The face of the circuit breaker is marked with standard ON/OFF and international I/O markings to
indicate handle position.
Push-to-trip
Button
The push-to-trip button located on the face of each circuit breaker is a standard feature of all Square D
molded case circuit breakers. This allows the user to manually trip the circuit breaker without risking
exposure to live parts. During normal on-off operation, the handle opens and closes the circuit breaker
contacts but does not exercise the tripping mechanism. Using the push-to-trip button exercises the
tripping mechanism.
Use the push-to-trip button to check:
❏
Alarm circuits
❏
Emergency circuits
❏
Motor sequencing operations
It is recommended that the circuit breaker tripping mechanism be exercised at least annually.
Instantaneous OFF
Feature
Full-function circuit breakers with adjustable long-time, short-time and instantaneous (LS[I]) trip units
provide the ability to turn the instantaneous tripping function OFF. Turning OFF the instantaneous trip
function increases the current level at which the circuit breaker will trip with no intentional delay to the
level of the short-time withstand rating. This current level is typically much higher than any of the
pickup levels provided by the adjustable instantaneous feature.
In other words, using the “Instantaneous OFF” feature improves coordination by allowing the user to
take advantage of the circuit breaker withstand rating.
11
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Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
Circuit Breaker
Mounting
L-, M-, and N-family unit-mount electronic trip circuit breakers (frame sizes through 1200 A) are
supplied with four mounting screws. These mounting screws are inserted through mounting holes
molded into the circuit breaker base and threaded into the enclosure. To properly support the circuit
breaker, all four mounting screws must be used.
P-family electronic trip circuit breakers (frame sizes above 1200 A) are supported with mounting
brackets attached to each circuit breaker or with a terminal pad kit.
Table 4.
Terminal Pad Usage
Circuit Breaker
Connections
Terminal Pads Required
600-1600 A PE
600-2000 A PX
Bus
No
Cable
Use terminal pad kit PALTB or equivalent bus structure.
Cable or Bus
Use terminal pad kit supplied with circuit breaker or
equivalent bus structure.
1800-2500 A PE
2500 A PX
See page 23 for frame-specific mounting information.
Circuit Breaker
Connections
L-, M-, and N-family circuit breakers (frame sizes through 1200 A) are available in unit-mount
construction for cable or bus connections; or with plug-on connectors for I-LINE applications. P-family
circuit breakers (frame sizes 1200 A and above) are available in unit-mount construction only, using
either cable or bus connections.
Unit-mount circuit breakers can be ordered with mechanical line and load side lugs. The standard lugs
can be removed for the installation of compression-type lugs or for bus connections.
All lugs are UL Listed for their proper application and marked for use with aluminum and copper (Al/Cu)
or copper only (Cu) conductors. Lugs suitable for copper and aluminum conductors are generally
made of tin-plated aluminum. Lugs suitable for use with copper conductors only are made of copper.
Plug-on circuit breakers are available through the 1200 A frame size for easy installation and removal
in Square D exclusive I-LINE panelboards and switchboards. I-LINE circuit breakers use “blow-on”
type connectors. In case of a short circuit, increased magnetic flux causes the plug-on connectors of
the circuit breaker to tighten their grasp on the panelboard or switchboard bus bars.
The I-LINE connectors are integral parts of I-LINE circuit breakers, and cannot be removed or
replaced.
See page 23 for frame-specific connection information.
12
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Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
TESTING REQUIREMENTS
Overview
The UL label on a Square D molded case circuit breaker indicates that the circuit breaker meets the
requirements of UL Standard 489 and that the manufacturer’s production procedure is monitored by
UL inspectors to ensure continuing conformance to UL performance requirements. These
requirements include the following tests:
Limited Available
Fault Current
Tests
•
•
•
•
•
200% Overload Calibration—each pole of the circuit breaker must trip within a specified time limit
when carrying 200% of its continuous current rating.
135% Overload Calibration—with all poles connected in series, the circuit breaker must trip within
a specified time limit while carrying 135% of its continuous current rating.
Overload—the circuit breaker must make and break 600% of its continuous current rating at rated
voltage. Circuit breaker frame sizes through 1600 A must perform 50 operations at 600%. Circuit
breaker frame sizes 1600 A through 3000 A must perform 25 operations at 600%.
Temperature Rise—while carrying 100% of rated current and mounted in open air, temperature
rise on a wiring terminal must be within specified limits. For 100% rating, the circuit breaker is
mounted in an enclosure.
Endurance—the circuit breaker must complete the following number of operations:
Table 5.
•
•
Endurance Testing Operations
Frame Size
(A)
Number of Operations
With Current
Without Current
255
4000
4000
400
1000
5000
600
1000
5000
800
500
3000
1200–2500
500
2000
Calibration Retest—both the 200% and 135% overload calibration tests are repeated.
Short Circuit—the circuit breaker must interrupt the current while maintaining the integrity of the
circuit breaker.
For circuit breaker frames 1200 A and below, two short-circuit tests per pole and one test with all poles
connected in common are performed. (A 3-pole circuit breaker receives seven short-circuit tests.)
For circuit breaker frames above 1200 A, a minimum of two short-circuit tests per pole and two tests with
all poles connected in common are performed. (A 3-pole circuit breaker receives eight short-circuit tests.)
•
•
Trip Out—the 200% thermal calibration test is repeated following the short-circuit tests.
Dielectric—the circuit breaker must withstand, for one minute, twice its rated voltage plus 1000 V:
—
Between line and load terminals with the circuit breaker in the tripped and in the OFF
positions.
— Between terminals of different potential with the circuit breaker closed.
— Between live parts and the overall enclosure with the circuit breaker both open and closed.
No conditioning of the circuit breaker can take place during or between tests. There can be no failure of
functional parts at the conclusion of the sequences.
13
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 1—General Information
High Available
Fault Current
Tests
After qualifying a set of circuit breakers to the standard tests, a manufacturer can have additional
circuit breaker samples tested on higher than standard available fault currents. The following
performance requirements apply:
•
•
•
•
200% Overload Calibration – each pole of the circuit breaker must trip within a specified time limit
when carrying 200% of its continuous current rating.
Short-circuit Test – with the load side terminals connected by 10-inch lengths of specified cable
(or a shorting bar), the circuit breaker is exposed to a short-circuit current for a set time interval.
After safe interruption, the circuit breaker is reset and closed again on the short circuit.
250% Overload Calibration – each pole of the circuit breaker must trip within a specified time limit
when carrying 250% of its continuous current rating.
Dielectric Withstand – the circuit breaker is subjected to twice its rated voltage, but not less than
900 V.
When the sample circuit breakers pass these tests, circuit breakers of the same construction can be
marked or labeled with the higher current interrupting rating.
MAINTENANCE AND TESTING
Molded case circuit breakers require little maintenance, but an inspection and maintenance procedure
should be established from the time of installation. The service life of electronic trip molded case circuit
breakers depends on proper application, correct installation, suitable environmental conditions, and
preventative maintenance. The guide most frequently used as a basis for field testing requirements is
NEMA Standard AB4, Guidelines for Inspections and Preventive Maintenance of Molded Case Circuit
Breakers used in Commercial and Industrial Applications.
Square D recommends that molded case circuit breakers be inspected and tested during the normal
annual maintenance of electrical systems. If operating or environmental conditions are severe, more
frequent inspections are recommended.
The circuit breaker case is sealed and must not be opened for any reason. Opening the circuit breaker
case voids all warranties and the UL Listing. No serviceable parts are located inside the molded case.
Inspection and
Preventative
Maintenance
Inspection procedures check items that may indicate a potential problem. For information on
inspection and preventative maintenance, See Data Bulletin 0600DB9901 Field Testing and
Maintenance Guide for MICROLOGIC® Electronic Trip and Thermal-magnetic Molded Case Circuit
Breakers.
Performance and
Verification
Testing
Performance tests such as insulation resistance tests, watts loss tests and electronic tripping function
trip tests can be performed to verify that the circuit breaker is able to perform its basic functions.
Use secondary injection testing or primary injection testing to check the trip system. A Square D
Universal Test Set (Cat. No. UTS3) is available for secondary injection testing.
For additional information or assistance, contact Square D at 1-888-SquareD (1-888-778-2733).
For on-site service, contact the Square D Technical Services Division, 24 hours a day, at 1-800-634-2003.
14
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section
2—MICROLOGIC®
Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
SECTION 2—MICROLOGIC TRIP SYSTEMS BASED ON LE, LX, LXI, ME,
MX, NE, NX, PE AND PX CIRCUIT BREAKERS
Square D electronic trip molded case circuit breakers are equipped with either the MICROLOGIC
Standard-function Trip System or the MICROLOGIC Full-function Trip System. Both trip systems provide
adjustable tripping functions and characteristics using true root-mean-square (rms) current sensing.
MICROLOGIC trip systems use a set of current transformers (called CTs or sensors) to sense current,
either a standard-function or full-function trip unit to evaluate the current, and a tripping solenoid to trip
the circuit breaker. Adjustable rotary switches on the trip unit allow the user to set the proper
overcurrent or ground current protection required in the electrical system. If current exceeds a set
value for longer than its set time delay, the trip system trips the circuit breaker.
Circuit breakers are shipped with the long-time pickup switch set at 1.0 and all other trip unit
adjustments set at their lowest settings. Actual settings required for a specific application must be
determined by a qualified consultant or plant engineer. A coordination study is recommended to
provide coordination between all circuit breakers in the distribution system.
Standard-Function Trip Unit
Full-Function Trip Unit
RMS SENSING
The sensing system on an electronic trip molded case circuit breaker responds to the flow of current
through the circuit breaker. Electronic trip circuit breakers are limited to ac systems because the
electronic trip system uses current transformers to sense the current.
The MICROLOGIC trip system samples the current waveform 33 times per cycle on a 60 Hz system. It
then uses this data to calculate the true rms current through the 13th harmonic. This true rms sensing
gives accurate values for the magnitude of a non-sinusoidal waveform. Therefore, the heating effects
of harmonically distorted waveforms are accurately evaluated.
Electronic trip circuit breakers with MICROLOGIC trip systems can be used on 50/60 Hz systems with
alternating current (ac) to direct current (dc), dc to ac, and ac to ac converters. This includes
applications that use silicon-controlled rectifiers (SCRs) and adjustable frequency controls.
Trip System Current Sensing
06023009
Figure 2.
Load Current
(Amperes)
Time
(Seconds)
1
Sample Interval
15
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 2—MICROLOGIC® Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
RATING PLUGS
Rating plugs are used to determine the circuit breaker ampere rating (P) according to the following
equation: Ampere Rating (P) = Sensor Size (S) × Rating Plug %. The ampere rating and the longtime pickup switch are then combined to determine the circuit breaker continuous current rating.
For example:
Multiplier
Continuous
Current Rating
=
225
=
(
(
Sensor
Size (S)
600
)×(
)×(
)×(
)×(
)
)
Rating
Plug %
Long-time
Setting
0.75
0.5
Rating plugs are available with multiplier values ranging from 0.40 to 1.00. If the rating plug is not
installed, the circuit breaker will operate safely, but the trip unit will default to a multiplier of 0.40.
Rating plugs and ammeter/trip indicators are subject to damage from static charge. Internal damage
can result if these devices are handled by their contacts. If either device is removed from the trip unit, it
must be held against grounded metal, such as the metal circuit breaker enclosure, for at least two
seconds before reinstalling.
Each MICROLOGIC circuit breaker is shipped with a rating plug factory installed. The label on the
circuit breaker marked “Configuration as Shipped” gives the circuit breaker configuration as it left the
factory. Field-installable rating plug kits are also available. See Section 4—Accessories for available
field-installable rating plug kits. Ground-fault pickup values are based on the sensor size of the circuit
breaker and are not affected by changing the rating plug.
AMMETER/TRIP INDICATOR
Overview
The ammeter/trip indicator is a troubleshooting tool used to identify the type of fault if an overcurrent
condition occurs, and to find potential overcurrent situations.
The ammeter/trip indicator displays current in phases A, B and C, and the peak ground-fault current
flowing in the circuit. Each value can be viewed one at a time using the phase select/indicator reset
button. (Phase values are displayed in true rms. Ground-fault current values are displayed in
calculated rms based on measured peak current.) A bar graph is provided indicating the level of
operating current as a percentage of the programmed ampere rating of the circuit breaker.
The ammeter/trip indicator window displays “OVERLOAD,” “SHORT CIRCUIT,” or “GROUND FAULT”
when the circuit breaker trips from an overcurrent. The indicator must be manually reset by pushing the
phase select/indicator reset button.
The ammeter can also be used as a rough guide when setting the ground-fault pickup when a coordination
study is not available. Selecting the GF screen under normal operating conditions will display the groundfault leakage current under those conditions. In order to protect against abnormal conditions, the groundfault pickup should be set somewhat higher than the GF value displayed on the screen.
The phase select/indicator reset button can be pressed at any time to test the ammeter/trip indicator
battery condition. The window will display a battery symbol. If this does not occur, contact Square D for
a replacement ammeter/trip indicator.
The ammeter/trip indicator is factory installed on the full-function circuit breaker and is available as a
field-installable option on the standard-function circuit breaker. It can be installed in or removed from
the trip unit without tripping the circuit breaker.
16
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section
2—MICROLOGIC®
Memory Feature
Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
MICROLOGIC trip systems feature a memory circuit for intermittent overload or ground-fault
conditions. This allows the circuit breaker to respond to a series of ON and OFF overload or groundfault conditions which could cause conductor overheating, but go undetected in a conventional
electronic trip device.
If the circuit breaker trips due to an overcurrent condition, wait at least one minute before resetting the
circuit breaker. This allows the memory to clear itself sufficiently for the circuit breaker to be turned ON.
If checking trip times, wait fifteen minutes after the circuit breaker trips before resetting to allow
memory to reset completely to zero (or use a memory reset module, Cat. No. MTMB).
Ground-Fault
Detection
Standard-function and full-function circuit breakers are available with integral ground-fault detection to
provide either ground-fault protection (trip) or alarm (no trip) on grounded systems. These circuit
breakers utilize a residual sensing scheme for ground-fault detection.
Both standard-function and full-function circuit breakers are available with integral equipment groundfault protection.
Full-function circuit breakers are also available with integral ground-fault alarm (no trip) to monitor the
flow of ground-fault current and signal an alarm condition through the POWERLOGIC® system, or with
additional components described in Data Bulletin 0502DB0001: Ground-fault Alarm for LE, ME, NE,
PE and SE MICROLOGIC Electronic Trip Circuit Breakers using RIM32 and AROMAT® relay.
This feature meets NEC Sections 700-7(d) and 700-26 for emergency systems. Circuit breakers with
the ground-fault alarm trip system DO NOT provide ground-fault protection (do not trip on groundfault).
Ground-fault protection trip units include both ground-fault pickup and delay adjustments. Ground-fault
alarm (no trip) trip units include only ground-fault pickup adjustments.
Circuit breakers with either ground-fault protection or alarm (no trip) trip systems are equipped with an
internal ground-fault push-to-test feature. The ground-fault push-to-test is built into the circuit breaker
and eliminates the need for any additional test equipment. The ground-fault push-to-test requires 120
Vac control power.
Trip
Characteristics
MICROLOGIC trip units provide a full range of adjustable tripping characteristics using a
microcomputer that constantly monitors the line currents. The overcurrent or ground-fault current
pickup and delay levels are set using adjustable rotary switches on the face of the trip unit. If the load
current exceeds the trip settings, the microcomputer signals the circuit breaker to trip.
Table 6.
Adjustable Tripping Characteristics for Electronic Trip Circuit Breakers
Standard-Function Trip Unit
Full-Function Trip Unit
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Long-time pickup
Long-time delay
Short-time pickup
Short-time delay (I2t IN only)
Instantaneous pickup
Ground-fault pickup
Ground-fault delay (I2t OUT only)
Long-time pickup
Long-time delay
Short-time pickup
Short-time delay (I2t IN and I2t OUT)
Instantaneous pickup
Instantaneous OFF
Ground-fault pickup
Ground-fault delay (I2t IN and I2t OUT)
Ground-fault alarm
I2t IN delay is an “inverse time” characteristic in that the delay time decreases as the current increases.
I2t OUT delay is a “constant-time” characteristic, the delay time does not change as the current
increases.
Trip settings are used to obtain a coordinated system in which a downstream circuit breaker will trip
before an upstream circuit breaker. Properly adjusting the MICROLOGIC® trip settings will result in a
circuit breaker trip curve that falls above and to the right of the branch circuit breaker trip curve. Under
overcurrent conditions, the branch circuit breaker will trip first. Square D recommends that a system
coordination study be done to find the proper trip unit settings to optimize coordination with other
devices.
17
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 2—MICROLOGIC® Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
STANDARD-FUNCTION TRIP UNIT
Overview
The standard-function trip unit trip curve drawing shows the various parts of a typical trip curve affected
by the adjustments on a standard-function trip unit. Adjusting the trip unit switches will shift that area of
the trip curve.
06023012
Note: The switch settings shown in the following explanation of trip functions are examples only. The
pictures are not representative of all frames and sensors. For specific switch settings, see the trip
curve for the particular circuit breaker type, frame, and sensor.
Long-time Pickup
1000
Standard-function Trip Unit
Trip Curve
Long-time Delay
TIME IN SECONDS
100
10
Short-time Pickup
Short-time Delay
(I2t IN)
1.0
Instantaneous Pickup
0.1
0.01
1
5
10
100
MULTIPLES OF AMPERE RATING
Ampere Rating (P) = Sensor Size (S) x Rating Plug (%)
Long-time Trip
Functions
Long-time Pickup
The long-time pickup switch value (multiplied by the ampere rating) sets the maximum current level
which the circuit breaker will carry continuously. If the current exceeds this value for longer than the set
delay time, the circuit breaker will trip.
Long-time Delay
The long-time delay switch value sets the length of time that the circuit breaker will carry a sustained
overload before tripping. Delay bands are labeled in seconds of overcurrent at six times the ampere
rating. For maximum coordination, eight delay bands are available. Long-time delay is an “inverse
time” characteristic in that the tripping time decreases as the current increases.
The trip unit includes an indicator that will flash when the current reaches 90% of the LONG-TIME
PICKUP setting and will be lit continuously when the current is above 100% of the pickup setting.
06023013
Figure 3.
.75
Long-time Pickup and Long-time Delay Switches
.8
4
.9
.7
5
6
3
.95
.6
.5
PICKUP
x P
1.0
7
10
PICKUP
x P
LONG TIME
.32
20
3
24
2
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
.2
.1
.5
.45
.3
.55
12 .25
12
3
PICKUP
x P
.65
.2
.75
PICKUP
x S
LONG-TIME
PICKUP
LONG-TIME
DELAY
GROUND FAULT
I 2 t OUT
.5
I 2 t IN
.5
16
.35
10
4
INSTANT.
SHORT TIME
11
4.5
8
2
8
5
6
2.5
DELAY
SEC. AT
12 x P
.32
.2
.1
.5
DELAY
SEC. AT
1xS
Indicator
18
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section
2—MICROLOGIC®
Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
Short-time Trip
Functions
The short-time pickup switch value (multiplied by the ampere rating) sets the short-circuit current level
at which the circuit breaker will trip after the set SHORT-TIME DELAY.
Short-time Delay
The short-time delay switch value sets the length of time the circuit breaker will carry a short circuit within
the short-time pickup range. The delay (based on 12 times the ampere rating, P) can be set to four positions
of I2t ramp operation (I2t IN).
06023025
Short-time Pickup
.75
.8
5
4
.9
.7
.5
PICKUP
x P
PICKUP
12
4.5
x S
GROUND FAULT
.32
.32
.2
.2
.1
.1
.5
DELAY
.5
DELAY
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
Short-time
Delay
I 2 t OUT
.5
20
24
2
.75
PICKUP
x P
INSTANT.
I 2 t IN
.5
16
3
Short-time
Pickup
.65
.2
PICKUP
x P
SHORT TIME
11
.55
12 .25
3
10
.45
.35
.3
10
4
8
2
LONG TIME
7
5
6
2.5
1.0
8
6
3
.95
.6
SEC. AT
1xS
SEC. AT
12 x P
Instantaneous Trip
Function
The instantaneous pickup switch value (multiplied by the ampere rating) sets the short-circuit current
level at which the circuit breaker will trip with no intentional time delay.
06023014
Instantaneous Pickup
.75
.8
4
.9
.7
5
.5
PICKUP
x P
1.0
8
2
12
PICKUP
DELAY
Instantaneous
Pickup OFF
PICKUP
GROUND FAULT
.32
.32
.2
.2
.1
.1
.5
.5
DELAY
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
Instantaneous
Pickup
I 2 t OUT
.5
20
24
.65
.75
x S
INSTANT.
I 2 t IN
.5
16
2
.55
.2
x P
x P
3
.45
.3
12 .25
3
10
.35
10
4
SHORT TIME
11
7
4.5
5
6
2.5
PICKUP
LONG TIME
8
6
3
.95
.6
SEC. AT
1xS
SEC. AT
12 x P
The instantaneous function will override the short-time function if the INSTANTANEOUS PICKUP is
adjusted at the same or lower setting than the SHORT-TIME PICKUP.
Ground-fault Trip
Functions
Ground-Fault Pickup
The ground-fault pickup switch value (multiplied by the sensor size) sets the current level at which the
circuit breaker will trip after the set GROUND-FAULT DELAY.
Ground-fault pickup values are based on the circuit breaker sensor size only, not the rating plug
multiplier. Changing the rating plug multiplier has no effect on ground-fault pickup values.
The ground-fault delay switch value sets the length of time the circuit breaker will carry ground-fault
current which exceeds the GROUND-FAULT PICKUP level before tripping. Delay can be adjusted with
four positions of fixed time delays (I2t OUT).
06023026
Ground-Fault Delay
.75
.8
4
.9
.7
5
.5
PICKUP
x P
1.0
7
8
PICKUP
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
.2
.1
.5
DELAY
SEC. AT
12 x P
3
12
PICKUP
.2
.55
.65
PICKUP
.75
x S
GROUND FAULT
Ground-fault
Pickup
Ground-fault
Delay
I 2 t OUT
.5
.32
20
24
2
.45
.3
12 .25
INSTANT.
I 2 t IN
.5
16
.35
10
4
x P
SHORT TIME
11
3
10
x P
LONG TIME
4.5
5
6
2.5
2
8
6
3
.95
.6
.32
.2
.1
.5
DELAY
SEC. AT
1xS
19
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 2—MICROLOGIC® Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
FULL-FUNCTION TRIP UNIT
Overview
The full-function trip unit trip curve drawing, below, shows the various parts of a typical trip curve
affected by the adjustments on a full-function trip unit.
06023027
Adjusting the trip unit switches will shift that area of the trip curve.
Long-time Pickup
1000
Full-function Trip Unit
Trip Curve
Long-time Delay
TIME IN SECONDS
100
10
Short-time Pickup
Short-time Delay
(I2t IN)
1.0
(I2t OUT)
Instantaneous Pickup
0.1
0.01
1
5
100
10
MULTIPLES OF AMPERE RATING
Ampere Rating (P) = Sensor Size (S) x Rating Plug (%)
Long-Time Trip
Functions
Long-time Pickup
The long-time pickup switch value (multiplied by the ampere rating) sets the maximum current level
which the circuit breaker will carry continuously. If the current exceeds this value for longer than the set
delay time, the circuit breaker will trip.
Long-time Delay
The long-time delay switch value sets length of time that the circuit breaker will carry a sustained
overload before tripping. Delay bands are labeled in seconds of overcurrent at six times the ampere
rating. For maximum coordination, there are eight delay bands.
06023028
Long-time delay is an “inverse time” characteristic in that the delay time decreases as the current
increases.
.75
.8
4
.9
.7
5
6
3
.95
.6
.5
PICKUP
x P
1.0
7
2
24
2
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
.2
.1
.5
.45
.3
.55
12 .25
12
3
PICKUP
x P
.65
.2
Long-time
Pickup
Long-time
Delay
.75
PICKUP
x S
GROUND FAULT
I 2 t OUT
.5
.32
20
.35
10
4
INSTANT.
I 2 t IN
.5
16
3
10
SHORT TIME
11
4.5
8
PICKUP
x P
LONG TIME
8
5
6
2.5
DELAY
SEC. AT
12 x P
.32
.2
.1
.5
DELAY
SEC. AT
1xS
Indicator
The trip unit includes an Indicator that will flash when the current reaches 90% of the LONG-TIME
PICKUP setting and will be lit continuously when the current is above 100% of the pickup setting.
20
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section
2—MICROLOGIC®
Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
Short-Time Trip
Functions
The short-time pickup switch value (multiplied by the ampere rating) sets the short-circuit current level
at which the circuit breaker will trip after the set SHORT-TIME DELAY.
Short-time Delay
The short-time delay switch value sets length of time the circuit breaker will carry a short circuit within
the short-time pickup range. The delay (based on 12 times the ampere rating, P) can be adjusted to
four positions of I2t ramp operation (I2t IN) or four positions of fixed time delays (I2t OUT).
06023029
Short-time Pickup
.75
.8
4
.9
.7
5
.5
INSTANT.
24
2
DELAY
GROUND FAULT
I 2 t OUT
.5
.32
.32
20
3
.75
PICKUP
x S
I 2 t IN
.5
16
.65
.2
PICKUP
x P
SHORT TIME
11
4.5
.55
12 .25
12
3
10
PICKUP
x P
LONG TIME
7
2
.3
10
4
8
.1
.1
.5
Short-time
Pickup
Short-time
Delay
I2t IN
.2
.2
.5
DELAY
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
.45
.35
5
6
2.5
1.0
PICKUP
x P
8
6
3
.95
.6
Short-time
Delay
I2t OUT
SEC. AT
1xS
SEC. AT
12 x P
Instantaneous Trip
Instantaneous Pickup
The instantaneous pickup switch value (multiplied by the ampere rating) sets the short-circuit current
level at which the circuit breaker will trip with no intentional time delay.
The instantaneous function will override the short-time function if the instantaneous pickup is adjusted
at the same or lower setting than the short-time pickup.
In full-function trip units with both adjustable short-time and instantaneous trip functions, the adjustable
instantaneous trip can be disabled by setting instantaneous pickup to OFF. Even when the
instantaneous pickup is turned OFF, an instantaneous override occurs above the circuit breaker shorttime withstand rating.
06023030
Instantaneous Pickup
OFF
.75
.8
4
.9
.7
5
.5
PICKUP
x P
PICKUP
12
3
10
I2
11
4.5
16
24
2
DELAY
PICKUP
x P
Instantaneous
Pickup OFF
x S
I 2 t OUT
.5
.32
.32
.2
.2
.1
.1
.5
.5
DELAY
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
Instantaneous
Pickup
.75
GROUND FAULT
t IN
.5
20
3
.65
.2
PICKUP
INSTANT.
SHORT TIME
.55
12 .25
x P
LONG TIME
7
2
.3
10
4
8
.45
.35
5
6
2.5
1.0
8
6
3
.95
.6
SEC. AT
1xS
SEC. AT
12 x P
Ground-Fault Trip
Ground-fault Pickup
The ground-fault pickup switch value (multiplied by the sensor size) sets the current level at which the
circuit breaker will trip after the set ground-fault delay.
Ground-fault pickup values are based on circuit breaker sensor size only, not on the rating plug
multiplier. Changing the rating plug multiplier has no effect on ground-fault pickup values.
The ground-fault delay switch value sets length of time the circuit breaker will carry ground-fault current
which exceeds the ground-fault delay level before tripping. Delay can be adjusted to four positions of
I2t ramp operation (I2t IN) or four positions of fixed time delays (I2t OUT).
06023031
Ground-fault Delay
.75
.8
4
.9
.7
5
.5
PICKUP
x P
1.0
7
8
2
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
.45
.3
.55
12 .25
3
12
PICKUP
.2
x P
.65
PICKUP
.75
x S
Ground-fault
Pickup
GROUND FAULT
I 2 t OUT
.5
.32
20
24
2
.35
10
4
INSTANT.
I 2 t IN
.5
16
3
10
x P
SHORT TIME
11
4.5
5
6
2.5
PICKUP
LONG TIME
8
6
3
.95
.6
.2
.1
.5
DELAY
SEC. AT
12 x P
Ground-fault
Delay
Ground-fault
Delay
I2t IN
I2t OUT
.32
.2
.1
.5
DELAY
SEC. AT
1xS
21
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 2—MICROLOGIC® Trip Systems Based on LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit
The ground-fault alarm switch value (multiplied by the sensor size) sets the current level at which the
circuit breaker will signal the POWERLOGIC® system or remote monitoring provided with additional
components described in Data Bulletin 0502DB0001, Ground-fault Alarm for LE, ME, NE, PE and SE
MICROLOGIC Electronic Trip Circuit Breakers using RIM32 and AROMAT® Relay.
06023032
Ground-fault Alarm
.75
.8
4
.9
.7
5
.5
PICKUP
x P
1.0
7
8
PICKUP
I2
16
24
2
DELAY
SEC. AT
6xP
FLASH=90%
ON = OVERLOAD
3
12
.2
PICKUP
.65
PICKUP
.75
.45
.3
.55
.65
.25
.75
.2
Ground-fault
Alarm
PICKUP
×S
x S
INSTANT.
GROUND FAULT
I 2 t OUT
.5
GROUND FAULT
ALARM
.32
.32
.2
.2
.1
.1
.5
.35
.55
12 .25
t IN
.5
20
.45
.35
.3
10
4
x P
SHORT TIME
11
3
10
x P
LONG TIME
4.5
5
6
2.5
2
8
6
3
.95
.6
.5
DELAY
DELAY
SEC. AT
1xS
SEC. AT
12 x P
ADDITIONAL SETTINGS
Settings to Approximate Thermal-Magnetic Circuit Breakers
The table below shows electronic trip unit settings which result in a trip curve similar to the trip curve of
a thermal-magnetic circuit breaker of the same ampere rating. The short-time and instantaneous
pickup levels are presented in ranges that approximate the “Lo” to “Hi” magnetic adjustment ranges
supplied on thermal-magnetic circuit breakers.
Settings to Approximate Zero-Sequence Ground-fault Protection Systems
Zero-sequence sensing ground-fault protection systems are used with thermal-magnetic circuit
breakers or fusible switches for equipment ground-fault protection. The ground-fault pickup and delay
settings on the electronic trip circuit breaker can be used to achieve trip curves similar to the Square D
GC ground-fault relay.
Table 7.
Trip Unit Settings to Approximate Thermal-Magnetic Circuit Breakers1
LA, LH
LC, LI
LE, LX, LXI
ShortTime
Pickup
400 A
14
8
600 A
14
8
5 to 8
20
24
10
10
5 to 10
5 to 10
7
4.5
10
10
1200 A
1600 A
2000 A
4.5
4.5
7
8
8
6
3 to 8
3 to 6
4 to 6
1600 A
2000 A
2500 A
7
7
4.5
8
6
5
4 to 8
3 to 6
3.5 to 5
MA, MH
ME, MX
400 A
800 A
NH, NA, NC
NE, NX
600 A
1200 A
PA, PH
PE, PX
PC
LongTime
Trip
LongTime
Delay
Thermal-Magnetic
Electronic Circuit Frame
Circuit Breaker Prefix Breaker Prefix
Size
1.0
ShortTime
Delay
Instantaneous
Pickup
5 to 8
.5 I2t IN
6 to 12
4 to 8
1. Thermal-magnetic circuit breakers do not have short-time tripping characteristics. To approximate the characteristics of a thermalmagnetic circuit breaker, the short-time pickup level should be equal to the instantaneous pickup level.
22
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
SECTION 3—CIRCUIT BREAKER SPECIFICS
This section provides application information on electronic trip circuit breakers available from
Square D. The information is organized by catalog prefix.
Table 8.
Available Circuit Breakers
Catalog Prefix
Frame Sizes (A)
LE, LX (page 24)
600
ME, MX (page 26)
800
NE, NX (page 28)
1200
PE, PX (page 30)
2500
CATALOG NUMBERING SYSTEM
When ordering Square D electronic trip circuit breakers, include circuit breaker family, poles, voltage
rating, ampere rating and trip unit suffix.
Table 9.
Catalog Numbering System for Circuit Breakers with MICROLOGIC® Trip Systems
Number Segment Character(s)
Description
ME L
3
6
800 LSG
LE, ME, NE, PE Circuit breakers with full-function trip systems
Circuit Breaker
Family
Connection Type
LX, MX, NX, PX Circuit breakers with standard-function trip systems
LXI
Current-limiting circuit breakers with standard-function
trip systems
No Letter
I-LINE
L
Lugs on both ends
F
Terminal pads only (PE, PX)
P
Lugs OFF end
3
3-pole
Voltage
6
600 Vac
Ampere Rating
800
800 Ampere Rating
LI
Adjustable long-time ampere rating and delay
Adjustable Instantaneous pickup
LS
Adjustable long-time ampere rating and delay
Adjustable Instantaneous pickup
LIG
Adjustable long-time ampere rating and delay
Adjustable Instantaneous pickup
Adjustable ground-fault pickup and delay
LSG
Adjustable long-time ampere rating and delay
Adjustable short-time ampere rating and delay
Adjustable Instantaneous pickup
Adjustable ground-fault pickup and delay
LIA
Adjustable long-time ampere rating and delay
Adjustable Instantaneous pickup
Adjustable ground-fault alarm pickup (no delay, no trip)
LSA
Adjustable long-time ampere rating and delay
Adjustable short-time ampere rating and delay
Adjustable Instantaneous pickup
Adjustable ground-fault alarm pickup (no delay, no trip)
No Letter1
LS configuration
G1
LSG configuration
Poles
Trip Unit Option
1. Standard-function trip unit
23
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
LE, LX AND LXI 600 A FRAME CIRCUIT BREAKERS
This section provides specific information on LE, LX and LXI electronic trip circuit breakers.
Table 10.
LE, LX, and LXI Circuit Breaker Catalog Numbers1
Features
Sensor
Size
Ampere
Rating
• Long-Time
• Instantaneous
• Long-Time
• Short-Time
• Instantaneous
• Long-Time
• Instantaneous
w/Ground-Fault
Protection
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Protection
• Long-Time
• Instantaneous
w/Ground-fault
Alarm
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Alarm
Rating Plug
Installed
LE Circuit Breaker with MICROLOGIC® Full-Function Trip System2
250
100
125
150
175
200
225
250
LE(L)36100LI
LE(L)36125LI
LE(L)36150LI
LE(L)36175LI
LE(L)36200LI
LE(L)36225LI
LE(L)36250LI
LE(L)36100LS
LE(L)36125LS
LE(L)36150LS
LE(L)36175LS
LE(L)36200LS
LE(L)36225LS
LE(L)36250LS
LE(L)36100LIG
LE(L)36125LIG
LE(L)36150LIG
LE(L)36175LIG
LE(L)36200LIG
LE(L)36225LIG
LE(L)36250LIG
LE(L)36100LSG
LE(L)36125LSG
LE(L)36150LSG
LE(L)36175LSG
LE(L)36200LSG
LE(L)36225LSG
LE(L)36250LSG
LE(L)36100LIA
LE(L)36125LIA
LE(L)36150LIA
LE(L)36175LIA
LE(L)36200LIA
LE(L)36225LIA
LE(L)36250LIA
LE(L)36100LSA
LE(L)36125LSA
LE(L)36150LSA
LE(L)36175LSA
LE(L)36200LSA
LE(L)36225LSA
LE(L)36250LSA
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
400
300
350
400
LE(L)36300LI
LE(L)36350LI
LE(L)36400LI
LE(L)36300LS
LE(L)36350LS
LE(L)36400LS
LE(L)36300LIG
LE(L)36350LIG
LE(L)36400LIG
LE(L)36300LSG
LE(L)36350LSG
LE(L)36400LSG
LE(L)36300LIA
LE(L)36350LIA
LE(L)36400LIA
LE(L)36300LSA
LE(L)36350LSA
LE(L)36400LSA
ARP075
ARP088
ARP100
600 3
450
500
600
LE(L)36450LI
LE(L)36500LI
LE(L)36600LI
LE(L)36450LS
LE(L)36500LS
LE(L)36600LS
LE(L)36450LIG
LE(L)36500LIG
LE(L)36600LIG
LE(L)36450LSG
LE(L)36500LSG
LE(L)36600LSG
LE(L)36450LIA
LE(L)36500LIA
LE(L)36600LIA
LE(L)36450LSA
LE(L)36500LSA
LE(L)36600LSA
ARP075
ARP083
ARP100
LX Circuit Breaker and LXI Current-Limiting Circuit Breaker with MICROLOGIC® Standard-Function Trip System1
250
100
125
150
175
200
225
250
—
—
—
—
—
—
—
LX(I)(L)36100
LX(I)(L)36125
LX(I)(L)36150
LX(I)(L)36175
LX(I)(L)36200
LX(I)(L)36225
LX(I)(L)36250
—
—
—
—
—
—
—
LX(I)(L)36100G
LX(I)(L)36125G
LX(I)(L)36150G
LX(I)(L)36175G
LX(I)(L)36200G
LX(I)(L)36225G
LX(I)(L)36250G
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
400
300
350
400
—
—
—
LX(I)(L)36300
LX(I)(L)36350
LX(I)(L)36400
—
—
—
LX(I)(L)36300G
LX(I)(L)36350G
LX(I)(L)36400G
—
—
—
—
—
—
ARP075
ARP088
ARP100
600
450
500
600
—
—
—
LX(I)(L)36450
LX(I)(L)36500
LX(I)(L)36600
—
—
—
LX(I)(L)36450G
LX(I)(L)36500G
LX(I)(L)36600G
—
—
—
—
—
—
ARP075
ARP083
ARP100
1. The (L) indicates that the letter L is optional.
—If no L is used, the circuit breaker is I-LINE® configuration and is shipped with standard mechanical lugs on the OFF end.
—If no L is used, the circuit breaker is shipped with standard mechanical lugs at both ends.
2. For non-standard lugs, See “Circuit Breaker Terminations” on page 37.
3. 600 A sensor is 80% rated.
Interrupting
Ratings
Table 11.
LE, LX, and LXI Circuit Breaker Interrupting Ratings
Circuit
Breaker
UL/CSA Rated
240 Vac
480 Vac
IEC 947-2
415/240 Vac
600 Vac
Icu
Ics
LE, LX
100 kA
65 kA
35 kA
65 kA
65 kA1
LXI
200 kA
200 kA
100 kA
65 kA
65 kA1
1. ICS = 50 kA on 600 Ampere sensor.
Lug Information
Unit-mount circuit breakers have mechanical lugs standard on both ends. I-LINE® circuit breakers
have lugs standard on the OFF end. These lugs accept aluminum or copper wire. Square D has other
terminations available as accessories for non-standard applications. For additional lug information,
See “Circuit Breaker Terminations” on page 37.
24
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
Continuous
Current Ratings
LE circuit breakers marked “100% Rated” can be continuously loaded to 100% of their rating. Because
of the additional heat generated when applying circuit breakers at 100% of continuous current rating,
the use of specially designed enclosures and 90°C rated wire is required.
Table 12.
LE, LX, and LXI Circuit Breaker Continuous Current Ratings
Circuit Breaker
Trip System
Sensor Size
LX, LXI
250 A
Standard-Function MICROLOGIC® trip system 400 A
600 A
LE
Full-Function MICROLOGIC® trip system
Max. Continuous Current Rating
80%
250 A
400 A
100%
600 A
80%
Markings on the circuit breaker indicate minimum enclosure size and ventilation specifications required.
The 90°C wire must be sized according to the ampacities of the 75°C wire column in the NEC.
Circuit breakers with 100% rating can also be used in applications requiring only 80% continuous loading.
Accessories
Accessories are available either factory installed or field installable. They can be installed in accessory
slots on either side of the circuit breaker handle. For additional accessory information,
See “Section 4—Accessories” on page 33.
Table 13.
LE, LX, and LXI Circuit Breaker Accessories
Field Installable
Description
Factory Installed
LE
LX, LXI
LE
Shunt Trip
×
×
×
LX, LXI
×
Undervoltage Trip
×
×
×
×
Auxiliary Switches
×
×
×
×
Alarm Switch
—
—
×
×
×
×
—
—
Electrical Trip Indicator
Handle Padlock Attachment
S1
×
S1
—
Local Current Meter
S1
×
S1
—
Neutral Current Transformer2
×
×
—
—
Electrical Operator
—
—
—
—
Trip Unit Seal
×
×
—
—
CIM3F communications Adapter
×
—
—
—
1. Standard item shipped with circuit breaker.
2. External Accessory: only needed when a neutral is associated with the load on a ground fault circuit breaker.
Control Wiring
Control Wiring and Terminal Block Wiring Terminals1
Full-Function Trip System
Number Terminal Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
ST Restraint IN
ST Restraint OUT
GF Restraint IN or Reserved (GF Alarm)
GF Restraint OUT or Reserved (GF Alarm)
Restraint COM
CIM3F-RED
CIM3F-BLACK
Reserved
CIM3F-BLUE
CIM3F-ORANGE
Reserved
Standard-Function Trip System
Number Terminal Name
1
2
3
4
5–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
Reserved
06023033
Table 14.
Control wiring is connected to terminals located under the circuit breaker access cover.
Full-function
Trip System
OFF
ON
OFF
OFF
Standardfunction
Trip System
1. Torque wire binding screws to 5–10 lb-in (0.6–1.1 N•m). Use (1) #14 AWG or (1 or 2) #18 AWG wires.
25
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
ME AND MX 800 A FRAME CIRCUIT BREAKERS
This section provides specific information on ME and MX electronic trip circuit breakers.
For additional trip unit information, see page 15.
Table 15.
ME and MX Circuit Breaker Catalog Numbers
Features
Sensor
Size
Ampere
Rating
• Long-Time
• Instantaneous
• Long-Time
• Short-Time
• Instantaneous
• Long-Time
• Instantaneous
w/Ground-Fault
Protection
• Long-Time
• Short-Time
• Instantaneous
w/ Ground-fault
Protection
• Long-Time
• Instantaneous
w/Ground-fault
Alarm
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Alarm
Rating Plug
Installed
ME Circuit Breaker with MICROLOGIC® Full-Function Trip System1
250
100
125
150
175
200
225
250
ME(L)36100LI
ME(L)36125LI
ME(L)36150LI
ME(L)36175LI
ME(L)36200LI
ME(L)36225LI
ME(L)36250LI
ME(L)36100LS
ME(L)36125LS
ME(L)36150LS
ME(L)36175LS
ME(L)36200LS
ME(L)36225LS
ME(L)36250LS
ME(L)36100LIG
ME(L)36125LIG
ME(L)36150LIG
ME(L)36175LIG
ME(L)36200LIG
ME(L)36225LIG
ME(L)36250LIG
ME(L)36100LSG
ME(L)36125LSG
ME(L)36150LSG
ME(L)36175LSG
ME(L)36200LSG
ME(L)36225LSG
ME(L)36250LSG
ME(L)36100LIA
ME(L)36125LIA
ME(L)36150LIA
ME(L)36175LIA
ME(L)36200LIA
ME(L)36225LIA
ME(L)36250LIA
ME(L)36100LSA
ME(L)36125LSA
ME(L)36150LSA
ME(L)36175LSA
ME(L)36200LSA
ME(L)36225LSA
ME(L)36250LSA
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
400
300
350
400
ME(L)36300LI
ME(L)36350LI
ME(L)36400LI
ME(L)36300LS
ME(L)36350LS
ME(L)36400LS
ME(L)36300LIG
ME(L)36350LIG
ME(L)36400LIG
ME(L)36300LSG
ME(L)36350LSG
ME(L)36400LSG
ME(L)36300LIA
ME(L)36350LIA
ME(L)36400LIA
ME(L)36300LSA
ME(L)36350LSA
ME(L)36400LSA
ARP075
ARP088
ARP100
800
450
500
600
700
800
ME(L)36450LI
ME(L)36500LI
ME(L)36600LI
ME(L)36700LI
ME(L)36800LI
ME(L)36450LS
ME(L)36500LS
ME(L)36600LS
ME(L)36700LS
ME(L)36800LS
ME(L)36450LIG
ME(L)36500LIG
ME(L)36600LIG
ME(L)36700LIG
ME(L)36800LIG
ME(L)36450LSG
ME(L)36500LSG
ME(L)36600LSG
ME(L)36700LSG
ME(L)36800LSG
ME(L)36450LIA
ME(L)36500LIA
ME(L)36600LIA
ME(L)36700LIA
ME(L)36800LIA
ME(L)36450LSA
ME(L)36500LSA
ME(L)36600LSA
ME(L)36700LSA
ME(L)36800LSA
ARP056
ARP063
ARP075
ARP088
ARP100
MX Circuit Breaker with MICROLOGIC® Standard-Function Trip System1
250
100
125
150
175
200
225
250
—
—
—
—
—
—
—
MX(L)36100
MX(L)36125
MX(L)36150
MX(L)36175
MX(L)36200
MX(L)36225
MX(L)36250
—
—
—
—
—
—
—
MX(L)36100G
MX(L)36125G
MX(L)36150G
MX(L)36175G
MX(L)36200G
MX(L)36225G
MX(L)36250G
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
400
300
350
400
—
—
—
MX(L)36300
MX(L)36350
MX(L)36400
—
—
—
MX(L)36300G
MX(L)36350G
MX(L)36400G
—
—
—
—
—
—
ARP075
ARP088
ARP100
800
450
500
600
700
800
—
—
—
—
—
MX(L)36450
MX(L)36500
MX(L)36600
MX(L)36700
MX(L)36800
—
—
—
—
—
MX(L)36450G
MX(L)36500G
MX(L)36600G
MX(L)36700G
MX(L)36800G
—
—
—
—
—
—
—
—
—
—
ARP056
ARP063
ARP075
ARP088
ARP100
1. The (L) indicates that the letter L is optional
—If no L is used, the circuit breaker is I-LINE® configuration and is shipped with standard mechanical lugs on the OFF end.
—If L is used, the circuit breaker is shipped with standard mechanical lugs at both ends.
—For non-standard lugs, page 33.
Interrupting
Ratings
Table 16.
ME and MX Circuit Breaker Interrupting Ratings
Circuit Breaker
UL Listed/CSA Certified
IEC 60947-2 Rated (415/240 Vac)
240 Vac
480 Vac
600 Vac
Icu
Ics
ME
65 kA
65 kA
25 kA
65 kA
33 kA
MX
65 kA
65 kA
25 kA
65 kA
33 kA
26
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
Continuous
Current Ratings
All ME circuit breakers are marked “100% Rated” and can be continuously loaded to 100% of their
rating. Because of the additional heat generated when applying circuit breakers at 100% of continuous
current rating, the use of specially designed enclosures and 90°C rated wire is required.
Table 17.
ME and MX Circuit Breaker Continuous Current Ratings
Circuit Breaker
MICROLOGIC Trip System
Sensor Size
Max. Continuous Current Rating
MX
Standard-Function
250 A
400 A
800 A
80%
ME
Full-Function
250 A
400 A
800 A
100%
Markings on the circuit breaker indicate minimum enclosure size and ventilation specifications required.
The 90°C wire must be sized according to the ampacities of the 75°C wire column in the NEC. Circuit
breakers with 100% rating can also be used in applications requiring only 80% continuous loading.
Lug Information
Unit-mount circuit breakers have mechanical lugs standard on both ends. I-LINE® circuit breakers have
lugs standard on the OFF end. These lugs accept aluminum or copper wire. Other terminations are
available as accessories for non-standard applications. See Circuit Breaker Terminations on page 37.
Accessories
Electrical accessories are available factory installed only. Other accessories are available either
factory installed or field installable. Accessories are installed in accessory slots on either side of the
circuit breaker. See Section 4—Accessories on page 33.
Table 18.
ME and MX Circuit Breaker Accessories
Field Installable
Description
Shunt Trip
Undervoltage Trip
Auxiliary Switches
Alarm Switch
Factory Installed
ME
MX
ME
MX
—
—
—
—
—
—
—
—
×
×
×
×
×
×
×
×
Handle Padlock Attachment
×
×
—
—
Electrical Trip Indicator
Local Current Meter
S1
S1
×
×
S1
S1
—
—
Neutral Current Transformer 2
Electrical Operator
Trip Unit Seal
CIM3F Communications Adapter
×
—
×
×
×
—
×
—
—
—
—
—
—
—
—
—
1. Standard item shipped with circuit breaker.
2. External Accessory: needed only when a neutral is associated with the load on a ground-fault circuit breaker.
Control Wiring
Control Wiring and Terminal Block Wiring Terminals
Full-Function Trip System
Standard-Function Trip System
Number
Terminal Name
Number Terminal Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
ST Restraint IN
ST Restraint OUT
GF Restraint IN or Reserved (GF Alarm)
GF Restraint OUT or Reserved (GF Alarm)
Restraint COM
CIM3F-RED
CIM3F-BLACK
Reserved
CIM3F-BLUE
CIM3F-ORANGE
Reserved
1
2
3
4
5–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
Reserved
06023034
Table 19.
Control wiring is connected to terminals located under the circuit breaker access cover.
Full-function
Trip System
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Standard-function
Trip System
1. Torque wire binding screws to 5–10 lb-in (0.6–1.1 Nm). #14 AWG (1) or #18 AWG (1 or 2) wire.
27
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
NE AND NX 1200 A FRAME CIRCUIT BREAKER
This section provides specific information on NE and NX electronic trip circuit breakers. For general information, see page 7.
For additional trip unit information, see page 15.
Table 20.
NE and NX Circuit Breaker Catalog Numbers
Features
Sensor
Size
Ampere
Rating
• Long-Time
• Instantaneous
• Long-Time
• Short-Time
Instantaneous
• Long-Time
• Instantaneous
w/Ground-Fault
Protection
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Protection
• Long-Time
• Instantaneous
w/Ground-fault
Alarm
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Alarm
Rating Plug
Installed
NE Circuit Breaker with MICROLOGIC Full-Function Trip System1
1200
600
700
800
NE(L)36600LI
NE(L)36700LI
NE(L)36800LI
NE(L)36600LS
NE(L)36700LS
NE(L)36800LS
NE(L)36600LIG
NE(L)36700LIG
NE(L)36800LIG
NE(L)36600LSG
NE(L)36700LSG
NE(L)36800LSG
NE(L)36600LIA
NE(L)36700LIA
NE(L)36800LIA
NE(L)36600LSA
NE(L)36700LSA
NE(L)36800LSA
ARP050
ARP0583
ARP067
900
1000
1200
NE(L)36900LI
NE(L)361000LI
NE(L)361200LI
NE(L)36900LS
NE(L)361000LS
NE(L)361200LS
NE(L)36900LIG
NE(L)361000LIG
NE(L)361200LIG
NE(L)36900LSG
NE(L)361000LSG
NE(L)361200LSG
NE(L)36900LIA
NE(L)361000LIA
NE(L)361200LIA
NE(L)36900LSA
NE(L)361000LSA
NE(L)361200LSA
ARP075
ARP083
ARP100
NX Circuit Breaker with MICROLOGIC Standard-Function Trip System1
1200
600
700
800
—
—
—
NX(L)36600
NX(L)36700
NX(L)36800
—
—
—
NX(L)36600G
NX(L)36700G
NX(L)36800G
—
—
—
—
—
—
ARP050
ARP0583
ARP067
900
1000
1200
—
—
—
NX(L)36900
NX(L)361000
NX(L)361200
—
—
—
NX(L)36900G
NX(L)361000G
NX(L)361200G
—
—
—
—
—
—
ARP075
ARP083
ARP100
1. The (L) indicates that the letter L is optional
—If no L is used, the circuit breaker is I-LINE® configuration and is shipped with standard mechanical lugs on the OFF end.
—If L is used, the circuit breaker is shipped with standard mechanical lugs at both ends.
—For non-standard lugs, See Circuit Breaker Terminations on page 37.
Interrupting
Ratings
Continuous
Current Ratings
Table 21.
NE and NX Interrupting Ratings
Circuit
Breaker
UL/CSA Rated
240 Vac
480 Vac
600 Vac
Icu
Ics
NE
125 kA
100 kA
65 kA
–
–
NX
125 kA
100 kA
65 kA
–
–
IEC 947-2
415/240 Vac
All NE circuit breakers are marked “100% Rated” and can be continuously loaded to 100% of their
rating. Because of the additional heat generated when applying circuit breakers at 100% of continuous
current rating, the use of specially designed enclosures and 90°C rated wire is required.
Table 22.
Continuous Current Ratings
Sensor Size
Max. Continuous
Current Rating
Circuit Breaker
MICROLOGIC Trip System
NX, NXL
Standard-Function
1200 A
80%
NE, NEL
Full-Function
1200 A
100%
Markings on the circuit breaker indicate minimum enclosure size and ventilation specifications
required. The 90°C wire must be sized according to the ampacities of the 75°C wire column in the
NEC. Circuit breakers with 100% rating can also be used in applications requiring only 80% continuous
loading.
28
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
Lug Information
Unit-mount circuit breakers have mechanical lugs standard on both ends. I-LINE® circuit breakers
have lugs standard on the OFF end. These lugs accept aluminum or copper wire.
Square D has other terminations available as accessories for non-standard applications. See “Circuit
Breaker Terminations” on page 37.
Accessories
Accessories are available either factory installed or field installable. They can be installed in accessory
slots on either side of the circuit breaker. For additional accessory information, see page 33.
Table 23. NE and NX Circuit Breaker Accessories
Description
Shunt Trip
Undervoltage Trip
Auxiliary Switches
Alarm Switch
Field Installable
Factory Installed
NE
NX
NE
NX
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
Handle Padlock Attachment
×
×
—
—
Electrical Trip Indicator
Local Current Meter
S1
S1
×
×
S1
S1
—
—
Neutral Current Transformer 2
Electrical Operator
Trip Unit Seal
CIM3F Communications Adapter
×
—
×
×
×
—
×
—
—
—
—
—
—
—
—
—
1. Standard item shipped with circuit breaker.
2. External Accessory: needed only when a neutral is associated with the load on a ground-fault circuit breaker.
Note: To ensure accurate current sensing in neutral conductor, a neutral bus wider than three inches
must be notched. see Bus-Bar Notching for Neutral Current Transformer on page 45.
Control Wiring
Control wiring is connected to terminals located under the circuit breaker access cover.
Control Wiring for NE and NX Circuit Breakers
06023035
Figure 4.
Full Function
Trip System
Standard
Function
Trip System
Table 24.
Terminal Block Wiring Terminals
Full-Function Trip System
Standard-Function Trip System
Number
Terminal Name
Number
Terminal Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
ST Restraint IN
ST Restraint OUT
GF Restraint IN or Reserved (GF Alarm)
GF Restraint OUT or Reserved (GF Alarm)
Restraint COM
CIM3F-RED
CIM3F-BLACK
Reserved
CIM3F-BLUE
CIM3F-ORANGE
Reserved
1
2
3
4
5–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
Reserved
1. Torque wire binding screws to 5–10 lb-in (0.6–1.1 Nm). (1) #14 AWG or (1 or 2) #18 AWG wires.
29
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
PE AND PX 2500 A FRAME CIRCUIT BREAKERS
This section provides specific information on PE and PX electronic trip circuit breakers. For general information, see page 7.
For trip unit information, on page 15.
Table 25.
PE and PX Circuit Breaker Catalog Numbers
Features
Sensor
Size
Ampere
Rating
• Long-Time
• Instantaneous
• Long-Time
• Short-Time
Instantaneous
• Long-Time
• Instantaneous
w/Ground-Fault
Protection
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Protection
• Long-Time
• Instantaneous
w/Ground-fault
Alarm
• Long-Time
• Short-Time
• Instantaneous
w/Ground-fault
Alarm
Rating Plug
Installed
PE Circuit Breaker with MICROLOGIC® Full-Function Trip System1
1200 A
600
700
800
900
1000
1200
PEF36600LI
PEF36700LI
PEF36800LI
PEF36900LI
PEF361000LI
PEF361200LI
PEF36600LS
PEF36700LS
PEF36800LS
PEF36900LS
PEF361000LS
PEF361200LS
PEF36600LIG
PEF36700LIG
PEF36800LIG
PEF36900LIG
PEF361000LIG
PEF361200LIG
PEF36600LSG
PEF36700LSG
PEF36800LSG
PEF36900LSG
PEF361000LSG
PEF361200LSG
PEF36600LIA
PEF36700LIA
PEF36800LIA
PEF36900LIA
PEF361000LIA
PEF361200LIA
PEF36600LSA
PEF36700LSA
PEF36800LSA
PEF36900LSA
PEF361000LSA
PEF361200LSA
ARP050
ARP058
ARP067
ARP075
ARP083
ARP100
1600 A
1400
1600
PEF361400LI
PEF361600LI
PEF361400LS
PEF361600LS
PEF361400LIG
PEF361600LIG
PEF361400LSG
PEF361600LSG
PEF361400LIA
PEF361600LIA
PEF361400LSA
PEF361600LSA
ARP088
ARP100
2000 A
1800
2000
PEF361800LI
PEF362000LI
PEF361800LS
PEF362000LS
PEF361800LIG
PEF362000LIG
PEF361800LSG
PEF362000LSG
PEF361800LIA
PEF362000LIA
PEF361800LSA
PEF362000LSA
ARP090
ARP100
2500 A
2500
PEF362500LI
PEF362500LS
PEF362500LIG
PEF362500LSG
PEF362500LIA
PEF362500LSA
ARP100
PX Circuit Breaker with MICROLOGIC® Standard-Function Trip System
1200 A
600
700
800
900
1000
1200
–
–
–
–
–
–
PFX36600
PFX36700
PFX36800
PFX36900
PFX361000
PFX361200
–
–
–
–
–
–
PFX36600G
PFX36700G
PFX36800G
PFX36900G
PFX361000G
PFX361200G
–
–
–
–
–
–
–
–
–
–
–
–
ARP050
ARP058
ARP067
ARP075
ARP083
ARP100
1600 A
1400
1600
–
–
PFX361400
PFX361600
–
–
PFX361400G
PFX361600G
–
–
–
–
ARP088
ARP100
2000 A
1800
2000
–
–
PFX361800
PFX362000
–
–
PFX361800G
PFX362000G
–
–
–
–
ARP090
ARP100
2500 A
2500
–
PFX362500
–
PFX362500G
–
–
ARP100
1. For non-standard lugs, See “Circuit Breaker Terminations” on page 37.
Interrupting
Ratings
Table 26.
PE and PX Circuit Breaker Interrupting Ratings
Circuit Breaker
UL/CSA Rated/Certified
IEC 60947-2 Rated (415/240 Vac)
240 Vac
480 Vac
600 Vac
Icu
Ics
PE
125 kA
100 kA
65 kA
70 kA
53 kA
PX
125 kA
100 kA
65 kA
70 kA
53 kA
30
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
Continuous
Current Ratings
PE circuit breakers marked “100% Rated” can be continuously loaded to 100% of their rating. Because
of the additional heat generated when applying circuit breakers at 100% of continuous current rating,
the use of specially designed enclosures and 90°C rated wire is required.
Table 27.
Continuous Current Ratings
Circuit Breaker
PX
PE
MICROLOGIC Trip System
Sensor Size
Max. Continuous Current Rating
Standard-Function
1200 A
1600 A
2000 A
2500 A
80%
1200 A
1600 A
2000 A
100%
2500 A
80%
Full-Function
Note: Markings on the circuit breaker indicate minimum enclosure size and ventilation specifications
required. The 90°C wire must be sized according to the ampacities of the 75°C wire column in the NEC.
Note: Circuit breakers with 100% rating can be used in applications requiring only 80% continuous loading.
Terminations
Table 28.
Lug Kits for PE and PX Circuit Breakers
Catalog Number
Conductors
Type
No.
Size
1
1/0 AWG–750 kcmil (50–400 mm2)
AL2500PA
Mechanical
2
1/0 AWG–300 kcmil (50–150 mm2)
VC2500PA7
Compression
1
50–750 kcmil (240–400 mm2)
VC2000PA5
Compression
1
2/0 AWG–500 kcmil (70–240 mm2)
Note: If mounting circuit breaker in other than Square D equipment, terminal pads may be required to
provide electrical spacing for bus or lugs and mounting hardware. Square D equipment provides the
necessary spacing.
Terminal Pad
Usage
Table 29.
Terminal Pad Usage Requirements
Circuit Breaker
Connections
Terminal Pads Required
PE 600–1600 A
PX 600–2000 A
Bus
No
Cable
Use terminal pad kit PALTB or equivalent bus structure.
Cable or Bus
Use terminal pad kit supplied with circuit breaker or
equivalent bus structure.
PE 1800–2500 A
PX 2500 A
Note: For bus structure dimensions, refer to dimensional drawings on page 43.
31
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 3—Circuit Breaker Specifics
Accessories
Accessories are available either factory installed or field installable. They can be installed in accessory
slots on either side of the circuit breaker. (Suffix numbers are specific to left or right side of circuit
breaker.)
Field-installable electrical accessories are mounted externally. Factory installed electrical accessories
can be mounted externally or internally. Consult the factory for specific customer mounting
requirements. For additional accessory information, See Section 4—Accessories.
Table 30.
PE and PX Circuit Breaker Accessories
Field Installable
Factory Installed
PE
PX
PE
PX
Shunt Trip
Undervoltage Trip
Auxiliary Switches
Alarm Switch
×
×
×
—
×
×
×
—
×
×
×
×
×
×
×
×
Handle Padlock Attachment
—
—
S1
S1
Electrical Trip Indicator
Local Current Meter
S1
S1
×
×
S1
S1
—
—
Neutral Current Transformer 2
Electrical Operator
Trip Unit Seal
CIM3F Communications Adapter
×
×
×
×
×
×
×
—
—
×
—
—
—
×
—
—
Description
1. Standard item shipped with circuit breaker.
2. External Accessory: needed only when a neutral is associated with the load on a ground-fault circuit breaker.
Control wiring is connected to terminals located under the circuit breaker access cover.
Table 31.
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06023036
Control Wiring
Full-function
Trip System
Standard
Function
Trip System
Terminal Block Wiring Terminals1
Full-Function Trip System
Standard-Function Trip System
Number
Terminal Name
Number
Terminal Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
ST Restraint IN
ST Restraint OUT
GF Restraint IN or Reserved (GF Alarm)
GF Restraint OUT or Reserved (GF Alarm)
Restraint COM
CIM3F-RED
CIM3F-BLACK
Reserved
CIM3F-BLUE
CIM3F-ORANGE
Reserved
1
2
3
4
5–16
Neutral CT (to X1)
Neutral CT (to X2)
Ground-Fault Test 120 Vac
Ground-Fault Test 120 Vac
Reserved
1. Torque wire binding screws to 5–10 lb-in (0.6–1.1 N•m) #14 AWG (1) or #18 AWG (1 or 2) wire.
32
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
SECTION 4—ACCESSORIES
Square D electronic trip molded case circuit breakers can be used with a variety of internal and
external accessories to increase application versatility and meet the demands of modern electrical
distribution systems.
Circuit breaker internal accessories are available either factory installed or field installable. External
accessories are field installed.
FACTORY-INSTALLED ACCESSORIES
Factory-installed accessories are internally mounted by the factory. Accessories available as factoryinstalled only cannot be removed or repaired in the field. Order factory-installed accessories by adding
the correct suffix number to the standard circuit breaker catalog number.
For example:
•
•
Circuit breaker: MXL36800
Circuit breaker with 1021 shunt trip: MXL368001021
FIELD-INSTALLED ACCESSORIES
Field-installable accessories can be installed or replaced in the field without affecting the circuit
breaker UL Listing or interrupting ratings. These accessories cannot be installed in a mounting location
or pole that has a factory-installed accessory installed in it.
Field-installable accessories are shipped separately from the circuit breakers. Install and wire fieldinstallable accessories according to the instructions supplied with them. Field-installable accessories
can be installed at the factory for an installation surcharge. Order field-installable accessories by
adding (1) and the correct suffix number to the circuit breaker family.
For example:
•
•
Circuit breaker: LEL36600LSG
Circuit breaker with 1021 shunt trip: LC11021
Table 32.
Electrical Accessories for Electronic Trip Molded Case Circuit Breakers
Description
LE, LX, LXI
Series 1
ME, MX
All Series
NE, NX
Series 1, 2 and 3
PE, PX
Series 4, 5 and 6
Field Installable
Factory Installed Only
Field Installable
Field Installable
Ground-Fault
Shunt Trip1
Not Available
Not Available
Not Available
Not Available
Undervoltage
Trip
Field Installable
Factory Installed Only
Field Installable
Field Installable
Auxiliary
Switches
Field Installable
Factory Installed Only
Field Installable
Field Installable
Factory Installed Only
Factory Installed Only
Field Installable
Factory Installed Only
Shunt Trip
Alarm Switch
1. Ground fault shunt trip for use with obsolete GP Ground-Sensor® System. Not used with MICROLOGIC® integral ground-fault trip
system.
33
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
Shunt Trip
The shunt trip provides a means of tripping the circuit breaker electrically from a remote location using
an external voltage source. A coil clearing contact opens the shunt trip coil circuit when the circuit
breaker opens.
A 120 Vac shunt trip operates at 55% or more of rated voltage 1. All other shunt trips operate at 75% or
more of rated voltage.
Table 33.
Shunt Trip Clearing Times
Circuit Breaker
Average Clearing Time
LX, LXI, LE
26 ms
MX, ME
33 ms
NX, NE
35 ms
PX, PE
40 ms
Figure 5.
Shunt Trip Wiring Diagram
Coil Clearing Switch
(Opens when circuit breaker is shunt tripped)
06023037
Circuit Breaker
Shunt Trip
Accessory
Field Leads
S
Trip Coil
Table 34: Shunt Trip Electrical Specifications.
Control Voltage Suffix
UL Listed
Max. Current—mA (rms)
Coil Burden—Max. VA
Min. Supply
Transformer
(VA)
L
M, N
P
L
M, N
P
24 Vac 50/60 Hz
48 Vac 50/60 Hz
120 Vac 50/60 Hz
208 Vac 50/60 Hz
240 Vac 50/60 Hz
277 Vac 50/60 Hz
480 Vac 50/60 Hz
600 Vac 50/60 Hz
1042
1048
10211
10212
10212
10372
10372
1026
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
1250
—
280
596
715
791
1658
—
850
540
240
515
740
50
93
93
3650
540
4000
500
740
50
93
93
30
—
30
124
172
219
796
—
20.4
26
29
107
154
13.9
44.6
44.6
88
26
54
104
154
13.9
44.6
44.6
25
50
50
50
50
25
50
—
6 Vdc
12 Vdc
24 Vdc
48 Vdc
72 Vdc
125 Vdc
250 Vdc
1040
1039
1027
1028
1038
1029
1030
Yes
Yes
Yes
Yes
Yes
Yes
Yes
—
—
1230
2380
—
6360
—
1714
800
1500
750
200
350
60
6000
6000
460
920
208
80
160
—
—
30
114
—
795
—
10.3
9.6
35
36
14.4
43.7
15
36
72
11
44
15
10
40
—
—
—
—
—
—
—
1. LE, LX, LXI 1021 shunt trip operates at 75% or more of 120 Vac.
2. Use Suffix 1086 for PE, PX circuit breakers.
34
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
Undervoltage Trip
The undervoltage trip accessory trips the circuit breaker when the voltage drops below a preset level.
The preset level is 35% to 70% of the control voltage. The undervoltage trip prevents the circuit
breaker from being reset until 85% of the control voltage is restored. The monitored circuit voltage can
be wired in series with an externally-mounted normally-closed contact which opens the circuit breaker
from a remote location.
06023038
Figure 6.
Undervoltage Trip Wiring Diagram and Average Clearing Times
Undervoltage Trip
Circuit Breaker
Average
Clearing Time
Circuit Breaker
Accessory Field Leads
UV
LX, LXI, LE
26 ms
MX, ME
33 ms
NX, NE
35 ms
PX, PE
40 ms
NC Switch
Undervoltage Trip Operation
06023039
Figure 7.
Must Not Trip
May Trip
Must Trip
Must Pickup
and Seal
May Pickup
and Seal
0%
70%
35%
85%
100%
Percent of Rated Voltage
Table 35.
Undervoltage Trip Electrical Specifications
Control
Voltage
Suffix
UL Listed
Max. Current
mA (rms)
Max.
Inrush
Coil Burden
(VA) Sealed
Min. Supply
Transformer (VA)
24 V 50/60 Hz
48 V 50/60 Hz
120 V 50/60 Hz
208 V 50/60 Hz
1143
1157
1121
1122
Yes
No
Yes
Yes
170
—
63 [20]1
30
4.1
7.6
7.6 [3.4]1
6.2
3.4
5.4
5.4 [2.4]1
4.1
25
25
25
25
240 V 50/60 Hz
277 V 50/60 Hz
380 V 50/60 Hz
415 V 50/60 Hz
1124
1142
1148
1149
Yes
No
No
No
32
63
63
63
7.6
7.6
7.6
7.6
5.4
5.4
5.4
3.4
25
25
25
25
440 V 50/60 Hz
480 V 50/60 Hz
600 V 50/60 Hz
6 Vdc
1134
1125
1126
1136
No
No
No
Yes
63
63
63
400
7.6
7.6
7.6
2.4
5.4
5.4
5.4
2.4
25
25
25
—
12 Vdc
24 Vdc
48 Vdc
72 Vdc
1133
1127
1128
1135
Yes
Yes
For P only
For P only
185
69
64 [50]1
45
2.2
1.6
3.1 [2.4]1
3.2
2.2
1.6
3.1 [2.4]1
3.2
—
—
—
—
125 Vdc
250 Vdc
1129
1130
For P only
For P only
40
21
5
5.2
5
5.2
—
—
1[
] are values for L-frame circuit breaker accessories
35
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
A Class 8430 phase failure relay used with a circuit breaker with an undervoltage trip provides
undervoltage protection on all three phases.
Figure 8.
Undervoltage Trip/Phase Relay Wiring Diagram
L2
L3
N
06023040
L1
L1
Option Control
Power Transformer
L2
L3
N.O.
C
Phase
Failure
Relay
N.C.
120 Vac
Undervoltage Trip*
* For supply voltages other than 120 Vac, a control power tranformer must be used to power up
the 120 Vac undervoltage trip
Undervoltage Trip
Time-Delay Unit
An optional adjustable time delay unit, Cat. No. 690UVTD or 690UVDTI, provides a time delay to avoid
nuisance circuit breaker opening due to momentary dips in the monitored voltage source. The time
delay is adjustable from 0.1 seconds to 0.6 seconds.
The time delay unit works only with the 120 Vac undervoltage trip accessory.
Note: On PE and PX circuit breaker time delay, time-delay unit only works with internal 1121.
Auxiliary Switch
An auxiliary switch is a single-pole double-throw switch operated by the movable contact arm
assembly. It is used to remotely indicate the position of the circuit breaker contacts, whether open or
closed. Auxiliary switches can be used to operate indicator lights, relays, or other accessories.
Figure 9.
Auxiliary Switch Contact Indication
06023041
Selection
Alarm Switch
Type of
Contacts
Suffix
Number
1A1B
2A2B
3A3B
1212
1352
1364
Ratings
120 or 240 Vac
120 Vac lamp load
125 Vdc
250 Vdc
10 A (1/3 hp)
4A
1/2 A
1/4 A
An alarm switch indicates that a circuit breaker has tripped. An alarm switch is actuated by the tripping
mechanism, and is reset automatically when the circuit breaker is reset. It is not actuated when the
circuit breaker is manually opened or closed. Maximum ratings are 7 A at 120 Vac or 240 Vac.
Table 36.
Alarm Switch Contact Indication
Contact Type
Suffix
Circuit Breaker Status
Tripped
Normally Open (N.O.)
Contact
2100
Normally Closed (N.C.)
Contact
2103
Open or Closed
36
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
CIRCUIT BREAKER TERMINATIONS
The L-, M- and N-frame circuit breakers have mechanical lugs standard on both ends of unit-mounted circuit breakers and on the
OFF end of I-LINE® mounted circuit breakers. These lugs accept aluminum or copper wire. Square D has optional terminations
available for use in nonstandard applications.
The P-frame circuit breakers have terminal pads only (no lugs) standard for bus connections on both ends. Terminal pad kits are
required for the use of lugs. For additional information on terminal pad requirements, See “Terminations” on page 31, and
“Appendix A—Dimensions” on page 43.
Mechanical Lugs
Table 37.
Optional copper mechanical lugs are available for use with copper wire only.
Circuit Breaker Lug Information
Catalog Number
Used On
Number of
Lugs Per Kit
Conductors
Screw Torque
Range(1)
No. per
Lug
Wire Binding
AWG/kcmil
Metric
lb-in
N•m
Lug Mounting
lb-in
N•m
Aluminum Mechanical Lugs
AL600LI35
AL600LI5
AL600LI7
AL800MA7
AL900MA
AL1200NE6
LE, LX, LXI
LE, LX, LXI
LE, LX, LXI
ME, MX
ME, MX
NE, NX
1
1
1
1
1
1
2
2
1
2
3
4
#1 AWG–350 kcmil
4/0 AWG–500 kcmil
500–750 kcmil
500–750 kcmil
3/0 AWG–500 kcmil
3/0 AWG–600 kcmil
50–185 mm2
95–240 mm2
240–400 mm2
240–400 mm2
95–240 mm2
95–300 mm2
300
300
350
300
300
330
34
34
39
34
34
37
80
80
80
180
180
225
9
9
9
21
21
25
1
2
1/0 AWG–750 kcmil
1/0 AWG–300 kcmil
50–400 mm2
50–150 mm2
(2)
(3)
(3)
PE, PX
2
(2)
AL2500PA
(2)
(2)
(3)
(3)
1
1
1
1
1
2
2
1
3
4
#2 AWG–350 kcmil Cu
4/0 AWG–500 kcmil Cu
500–750 kcmil Cu
3/0 AWG–500 kcmil Cu
3/0 AWG–600 kcmil Cu
35–185 mm2 Cu
95–240 mm2 Cu
240–400 mm2 Cu
95–240 mm2 Cu
95–300 mm2 Cu
300
300
350
300
330
34
34
39
34
37
80
80
80
300
330
9
9
9
21
37
Copper Mechanical Lugs
CU600LI35
CU600LI5
CU600LI7
CU1000MA
CU1200NE6
LE, LX, LXI
LE, LX, LXI
LE, LX, LXI
ME, MX
NE, NX
Aluminum Compression Lugs
VC600LI3(4)
VC600LI5(4)
VC600LI7(4)
VC600MA5
LE, LX, LXI
LE, LX, LXI
LE, LX, LXI
ME, MX
2
2
1
2
1
1
1
1
#4 AWG–300 kcmil
2/0 AWG–500 kcmil
500–750 kcmil
2/0 AWG–500 kcmil
25–150 mm2
70–240 mm2
240–400 mm2
70–240 mm2
—
—
—
—
—
—
—
—
180
370
370
300
21
42
42
34
VC800MA7
ME, MX
2
1
1
500–750 kcmil Al
500 kcmil Cu
240–400 mm2 Al
240 mm2 Cu
—
—
—
—
300
300
34
34
VC1200NE5
NE, NX
4
1
2/0 AWG–500 kcmil
70–240 mm2
—
—
600
68
1
1
500–750 kcmil Al
500 kcmil Cu
240–400 mm2 Al
240 mm2 Cu
—
—
—
—
600
600
68
68
2/0 AWG–500 kcmil
70–240 mm2
—
—
(3)
(3)
VC1200NE7
NE, NX
4
VC2000PA5
PE, PX
1
1
2
1
1
500–750 kcmil Al
500 kcmil Cu
Al
240–400
240 mm2 Cu
—
—
—
—
(3)
(3)
(3)
(3)
1
2
4
4
1
1
1
1
250–500 kcmil Cu
250–500 kcmil Cu
2/0 AWG–500 kcmil Cu
500–750 kcmil Cu
120–240 mm2 Cu
120–240 mm2 Cu
70–240 mm2 Cu
240–400 mm2 Cu
—
—
—
—
—
—
—
—
370
300
600
600
42
34
68
68
1
1
6
12
#12–2/0 AWG Cu
#14–4 AWG Cu
2.5–70 mm2 Cu
2.5–25 mm2 Cu
(1)
(1)
(1)
(1)
300
300
34
34
VC2500PA7
PE, PX
mm2
Copper Compression Lugs
CVC600LI5(4)
CVC600MA5
CVC1200NE5
CVC1200NE7
LE, LX, LXI
ME, MX
NE, NX
NE, NX
Power Distribution Connectors
PDC6MA20
PDC12MA4
ME, MX
ME, MX
1. Unless otherwise specified, wire sizes apply to both aluminum and copper conductors.
2. See instructions with lug for information.
3. PE and PX circuit breakers require use of terminal pads for lug mounting.
4. Lug cannot be used on I-LINE® circuit breakers.
37
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
Compression Lugs
Square D offers exclusive VERSA-CRIMP® compression lugs in either copper or aluminum.
06900031
Figure 10. VERSA-CRIMP® Compression Lugs
Power distribution connectors are available for ME and MX circuit
breakers as field-installable kits. They can be used for multiple load wire
connections on one circuit breaker. Each is UL Listed for copper wire
only. Power distribution connectors are for use on the OFF end of the
circuit breaker only, and the OFF end must be connected to the load.
06023041
Power Distribution
Connectors
CBA I-LINE® Jaw
Configuration
Standard 3-pole I-LINE® circuit breakers are supplied with an ABC phase jaw configuration. In
applications where the jaw configuration must be reversed, specify a CBA jaw configuration by adding
CBA at the end of the circuit breaker catalog number.
Control Wire
Termination
Mechanical lug kits (except for PE/PX circuit breaker lug kits) are available with provisions for control
wire terminations. The lug body accepts a #6-32 screw included in the kit. The control wire is crimped
to a standard wire crimp terminal (not included) and secured to the lug using the screw provided.
These lugs are UL Recognized as a circuit breaker component.
06023042
Figure 11. Mechanical Lugs with Control Wire Terminations
OTHER ACCESSORIES
Electric Joint
Compound
I-LINE® circuit breakers, I-LINE busway plug-on units, and I-LINE panelboards and switchboards are
supplied with factory-applied joint compound on the plug-on connectors. The compound is especially
formulated for I-LINE connections and contributes to the overall performance of the connections.
If the joint compound is removed, it must be reapplied. A 2-ounce container of joint compound (Cat.
No. PJC7201) is available from Square D.
Rating Plugs
Rating plugs are used on electronic trip circuit breakers to establish the circuit breaker ampere rating.
The rating plug varies the circuit breaker ampere rating as a function of the circuit breaker sensor size.
Rating plugs are factory installed and are also available in field-installable kits.
Table 38.
Rating Plugs
Catalog
Number
Multiplier
Catalog
Number
Multiplier
ARP040
ARP050
ARP056
ARP058
ARP060
ARP063
ARP067
0.400
0.500
0.563
0.583
0.600
0.630
0.670
ARP070
ARP075
ARP080
ARP083
ARP088
ARP090
ARP100
0.707
0.757
0.807
0.833
0.880
0.900
1.000
38
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
Trip Indicator
The trip indicator, Cat. No. ALTI (ALTIP for PE/PX circuit breakers), displays “OVERLOAD,” “SHORT
CIRCUIT,” or “GROUND FAULT” when the circuit breaker has experienced a trip condition. After the
circuit breaker has cleared the fault and is reset, the trip indicator must be manually reset by pushing
the indicator reset button.
06023043
Figure 12. ALTI and ALTIP Trip Indicators
Ammeter/Trip
Indicator
The ammeter/trip indicator, Cat. No. ALAM (ALAMP for PE/PX circuit breakers), is provided with every fullfunction trip unit and is available as an option for the standard-function trip unit. It monitors current in phases
A, B and C, and ground-fault current flowing in the circuit. Each value can be viewed one at a time using the
phase select/indicator reset button. (Phase values are displayed in true rms. Ground-fault current values
are displayed in calculated rms based on measured peak current.) A bar graph is provided indicating the
level of operating current as a function of the programmed ampere rating of the circuit breaker.
06023044
Figure 13. ALAM and ALAMP Ammeter/Trip Indicators
The ammeter/trip indicator displays “OVERLOAD,” “SHORT CIRCUIT,” or “GROUND FAULT” when
the circuit breaker has experienced a trip condition. After the circuit breaker has cleared the fault and is
reset, the ammeter/trip indicator must be manually reset by pushing the phase sect/indicator reset
button.
06023045
Figure 14. Trip Condition Displays on ALAM and ALAMP Ammeter/Trip Indicators
39
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
Figure 15. Communications Adapter
The field-installable communications adapter, Cat. No.
CIM3F, allows a full function circuit breaker trip unit to
communicate with a Square D POWERLOGIC®
Communications Network. This allows full function circuit
breakers to be networked in a POWERLOGIC® system.
The communications adapter cannot be used with
standard-function circuit breakers.
06023046
Communications
Adapter
Note: The communications adapter cannot be used with standard-function circuit breakers.
Electrical
Operators
Electrical operators provide ON, OFF and RESET control from remote locations for electronic-trip
molded case circuit breakers. When remote indication of the circuit breaker status is required, use of a
circuit breaker with a 1A1B auxiliary switch for on-off indications or with an alarm switch for trip
indication is necessary.
The PAM02 is an electronically-controlled operating mechanism that installs to the top surface of a
PX/PE electronic trip circuit breaker. It requires momentary, continuous, or solid state contacts and the
correct control voltages.
06023047
Figure 16. PAM02 Wiring Diagram
Table 39.
PAM02 Electrical Operator Characteristics1
Current
Closing Time
(sec.)
Inrush (peak)
Continuous (rms)
Endurance
(minimum operations)
0.20
40 A
10 A
5000
1. Values are based on 120 Vac 60 Hz control voltage. A 50 Hz supply voltage increases the operating times by approximately 20%.
For electrical operator dimensions, see page 51.
Note: There are no electrical operators available for the LE/LX/LXI, ME/MX or NE/NX circuit breakers.
40
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
HANDLE ACCESSORIES
Handle Extensions
A handle extension is available for the LX/LE, MX/ME and NX/NE frame circuit breakers. It fits over the
existing handle to ease movement. Handle extensions are not available for PX/PE circuit breakers.
Handle
Interlocking
A handle accessory is available for PX/PE circuit breakers which allows mechanical interlocking with a
key interlock (not included in kit). The assembly kit (Cat. No. PAKK) includes hardware to mount the
accessory on the circuit breaker handle.
Handle Padlocks
A handle padlock is available for LX/LE, MX/ME and NX/NE electronic trip molded case circuit
breakers to lock the circuit breaker handle in the ON or OFF position with the use of a padlock.
A field-installable handle padlock attachment is available for the LX/LXI/LE, MX/ME and NX/NE frame
circuit breakers. PX/PE circuit breakers have a built-in (factory installed) padlocking feature for locking
OFF only. An additional hinge over hasp feature is available on PX/PE to meet EUSERC
requirements—add PL suffix.
06023048
Figure 17. PX and PE Circuit Breaker Handle Padlock Attachment
Neutral Current
Transformers
Current transformers are available for applications requiring ground-fault protection on three-phase,
four-wire loads. Neutral current transformers are not required on non-ground fault circuit breakers, or
on three-phase, three-wire loads.
Table 40.
Neutral Current Transformers
Circuit Breaker
Circuit Breaker
Sensor Size
Neutral Current Transformer
Catalog Number
LX, LXI, LE
250 A
400 A
600 A
LE2CT2
LE4CT2
LE6CT2
MX, ME
250 A
400 A
800 A
ME25CT2
ME4CT2
ME8CT2
NX, NE
1200 A
NE12CT2
PX, PE
1200 A
1600 A
2000 A
2500 A
PE12CT2
PE16CT2
PE20CT2
PE25CT2
41
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Section 4—Accessories
Restraint Interface
Modules
A restraint interface module is required for zone-selective interlocking when:
•
•
The distance between any two circuit breakers in the restraint system exceeds 1000 ft. (305 m) and/or
Trip units of the circuit breakers and/or ground-fault modules to be interlocked are not the same series
Note: The restraint interface module cannot be used with standard-function circuit breakers.
Figure 18. Restraint Interface Modules
Cat. No.
RIM32
Cat. No.
S48890—120 Vac/24 Vdc
S48895—240 Vac/24 Vdc
The restraint interface module (catalog numbers S48890 and S48895) is used to allow zone-selective
interlocking communications between circuit breakers with Series B to 5.0x and 6.0x MICROLOGIC,
MERLIN GERIN, or FEDERAL PIONEER trip units and GC Series ground-fault relays.
Trip Unit Seals
The NEC allows electronic trip circuit breakers to be used with cable up to the adjusted continuous
current rating as long as the circuit breaker has a removable and sealable cover over the trip unit
adjustments. Square D trip unit seals are available for all electronic trip molded case circuit breakers:
Cat. No. TUSEAL designates a quantity of 100 plastic seals that cannot be removed without being
destroyed. Seals installed in posts on the circuit breaker limit access to both the rating plug and the trip
unit adjustments. The rating plug and the clear plastic cover over the switches each have one sealing
location.
Universal Test Set
The Universal Test Set, Cat. No. UTS3, is available to test Square D circuit breakers with
MICROLOGIC® trip units. It runs trip unit test automatically or manually with prompts to the user for
initial information. Testing can be done with the circuit breaker installed in the switchboard, following
the directions shipped with the test set.
A test module stores data necessary for automatic test for each frame. MICROLOGIC® Series 3B trip
units require test module CBTMB, which is included with the Universal Test Set. If an older Universal
Test Set is used that does not contain a CBTMB test module, a CBTMB test module must be obtained.
Figure 19. Universal Test Set
42
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
APPENDIX A—DIMENSIONS
LE, LX AND LXI CIRCUIT BREAKERS
0.55
[14]
2.48
[63]
0.29
[7]
2.50
[64]
6.75
[171]
1.35
[34]
4.86
[123]
0.47
[12]
10.75
[273]
6.63
[168]
10.54
[268]
11.84
[301]
Mounting Holes (4)
10-32 × 3-1/2 in.
Cap Screws
8.44
[214]
1.38
[35]
0.22
[6]
0.30
[8]
4.26
[108]
0.38
[10]
5.48
[139]
0.87
[22]
6.74
[171]
06023050
7.48
[190]
7.14
[182]
1.77
[45]
Neutral Current Transformer for LE, LX and LXI Circuit Breakers
0.17
[4]
0.88
[22]
2.10
[53]
4×
0.40
dia.
[10]
0.87
[22]
1.00
[25]
0.25
[6]
0.25
[6]
5.86
[149]
0.81
[21]
2.81
[71]
4.00
[102]
2.04
3×
[52]
3×
1.90
[48]
1.62
3×
[41]
1.24
[32]
2.50
[64]
2.50
[64]
7.13
[18]
0.85
[22]
1.53
[39]
0.25
[6]
0.56
[14]
2.75
[70]
Dimensions:
in.
[mm]
43
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
ME AND MX CIRCUIT BREAKERS
0.344
dia.
[9]
0.620
Counterbore
dia.
[16]
4 Mounting Holes
1.00
[25]
3.00
[76]
12 Bus Mounting Holes
7/16-14 tapped hole
20–25 lb-ft (27–34 N•m) max. torque
3.00
[76]
06023051
0.22
[6]
3.00
[76]
0.50
[13]
5.90
[150]
1.64
[42]
0.79
[20]
1.64
[42]
5.00
[127]
16 30' ON
11.43
[290]
14.75
[375]
11.43
[290]
8 TRIPPED
5 30' OFF
3.50
[89]
5.09
[129]
10 RESET
1.59
[40]
6.75
[171]
1.66
[42]
1.66
[42]
0.22
[6]
2.73
[69]
2.98
[76]
4.48
[114]
4.37
[111]
5.13
[130]
1.50
[38]
6.50 Max.
[165]
8.46
[215]
4.23
[107]
1.64
[42]
Neutral Current Transformer for ME and MX Circuit Breakers
2.10
[53]
0.50
[13]
1.05
[27]
0.64
[16]
0.93
[24]
5.74
[146]
7.13
[181]
2.83
[72]
4.93
[125]
1.03
[26]
0.06
[2]
0.78
[20]
3.53
[91]
2.25
[57]
5.86
[149]
2.34
[60]
2.44
[62]
8.96
[228]
0.56
dia.
[14]
2 Holes
0.25
[6]
1.00
[25]
0.40
dia.
[10]
4 Holes
Dimensions:
in.
[mm]
44
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
06023052
NE AND NX CIRCUIT BREAKERS
8.10
Max.
[206]
6.43
[163]
14.98
[380]
7.49
[190]
5.00
[127]
5.00
[127]
2.50
[63]
4.31
[109]
0.48
[12]
2.50
[63]
2.25
[57]
1.33
[34]
2.25
[57]
1.68
[43]
1.08
[28]
0.92
[23]
21 ˚ ON
8.75
[222]
12.12
[308]
8.17
[208]
10.75
[273]
0.48
[12]
3 TRIPPED
19 30' OFF
1.68
[43]
5.55
[141]
24 30' RESET
4.81
[122]
0.18
[5]
0.92
[23]
See Detail A
4.99
[127]
14.62
[371]
1.75
[44]
3/8-16 Hex Head Bolt
140–170 lb-in Torque
3.28
[83]
8.07
[205]
1.64
[42]
2.12
[54]
6.40
[163]
8.07
[205]
0.98
[25]
0.98
[25]
1.08
[27]
4.40
[112]
0.29
[7]
4.40
[112]
5.29
[134]
4.40
[112]
0.25
[6]
10.29
[261]
Neutral Current Transformer for NE and NX Circuit Breakers
3.75
[95]
1.75
[44]
1.75
[44]
Bus Bar Notching for Neutral Current Transformer
0.50
[13]
1.34
[34]
0.30
0.67 [8]
[17]
6.00
[152]
4.07
[10]
1.50
[38]
0.96
[24]
4x
0.32
[8]
1.71
[43]
Detail A
Bus Mounting Holes
6 places
1.06
[27]
2.90
[74]
3.50
[89]
0.27 dia.
[7]
1.25
[32]
0.95
[24]
1.20
[30]
4.00 Bus
[102]
Neutral
CT Assembly
0.11
[3]
Notch Bus,
Two Places
Dimensions:
in.
[mm]
45
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
Neutral Current Transformer Clearance Requirements for NE and NX Circuit Breakers
06023053
Steel enclosure or
other ferrous surface.
Neutral
Current
Transformer
0.75
Min.
[19]
NE Circuit Breaker
0.75
Min.
[19]
1.00
[25]
1.00
[25]
Min.
Min.
46
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
PE AND PX CIRCUIT BREAKERS
6x
24 x
PE and PX Circuit Breaker
0.56
[14] dia.
1.00
[25]
0.75
[19]
2.75
[70]
0.44
[11] dia.
3.00
[76]
1.50
[38]
0.38
[10]
2.00
[51]
1.25
[32]
0.85
[22]
3.25
[83]
0.28 0.50
8 x [7 x [13] Slot
]
ON
0.37
[9 ]
RE
SE
1.60
Max.
[40.6 ]
20.10
[511]
40˚
TR
IP
OFF
T
90˚
14.00
[356]
30˚
12.00
[305]
9.00
[229]
2.00
[51]
1.75
[44]
0.38
[10]
3.10
[79]
1.50
[38]
1. 0
[25]
0.75
[19]
06023054
0.75
[19]
12.00
[305]
1.50
[38]
4.00
[102]
6.00
[152]
11.00
[279]
5.75
[146]
6.88
[175]
10.47
[266]
Dimensions:
in.
[mm]
Neutral Current Transformer for
PE and PX Circuit Breakers
4.23
[107]
3.87
[98]
0.56
2 x [14] dia.
06023055
3.06
[78]
8 x 0.44
[11] dia.
2.38
[61]
8.50
[216]
0.40
[10]
2.25
[57]
1.50
[38]
0.75
[19]
0.62
[16]
2.13
[54]
1.37
[35]
2.75
[70]
Dimensions:
in.
[mm]
47
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
600–1600 A PE and 600–2000 A PX
Circuit Breaker with Terminal Pads
06023056
33.50
[851]
32.25
[819]
17.62
[448]
16.55
[420]
1.00
[25] Max
4.59
[117]
3.59
[91]
0.50
[13]
1.20
[30]
14.10
[358]
32.58
[828]
Mounting
Plane
26.10
[663]
Push-to-trip
Button
6.10
[155]
6 x 0.437 dia.
[11]
9.24
[235]
Do Not Run
Cables In
Shaded Area
Rear
Support
8.11
[210]
0.12
[3]
1.75
[44]
0.88
[22]
7.00
[178]
16.12
[410]
1.12
[28]
13.38
[340]
Front
Support
0.13
[3]
Dimensions:
in.
[mm]
48
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
1800–2500 A PE and 2500 A PX Circuit
Breaker with Terminal Pads
1.12
[28]
Connector Ho l e
0.59 dia.
[15]
1.12
[28]
0.40
[10 ]
06023057
3.46
[88]
ON
14.10
[358 ]
26.10
[663]
OFF
3.46
[88]
13.33
[339]
7.75
[197]
9.43
[240]
14.60
[371]
23.30
[592]
17.82
[453]
4.12
[105
4.75
[121]
4.12
[105]
4.75
[121]
4.12
[105]
0.72
[18]
Dimensions:
in.
[mm]
49
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
PALTB Terminal Pad Bus for 600–1600 A
PE and 600–2000 A PX Circuit Breakers
2.75
[70]
4.12
[105]
8.50
[216]
5.50
Lug Mtg.
Holes
0.562
dia.
[14]
[140]
06023058
3 per bus
3.00
[76]
1.38
[35]
4.38
[111]
Rawstock:
6.00
[152]
0.25
[6] Thick Aluminum
ASTM B-317 Type 5 Alloy No. 6101
1.50
[38]
2.25
[57]
1.50
[38]
0.75
[19]
Dimensions:
in.
[mm]
Terminal Pad Bus for 1800-2500 A PE and
2500 A PX Circuit Breakers
2.75
[60]
[70]
1.48
[38]
3.23
[82]
06023059
2.37
4.12
[105]
2.82
[72]
1.50
1.75
[38]
[44]
5.42
[138]
8.60
[218]
6.72
[171]
8.35
[212]
0.81
[21]
1.38
[35]
Lug Mounting Holes: 0.53 Sq.
[13]
Eight Per Terminal
1.38
[35]
Rawstock:
1.50
[38]
0.25
[6]
Thick Copper Tin Plated
6.00
[152]
5.68
[144]
6.56
[167]
Dimensions:
in.
[mm]
50
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
Electrical Operator for PX and PE
Circuit Breakers
06023060
2.75
[70]
3.00
[76]
20.10
[511]
10.40
[264]
14.00
[356]
3.10
[79]
1.0
[25]
5.75
[146]
6.88
[175]
4.00
[102]
12.00
[305]
6.00
[152]
10.47
[266]
Dimensions:
in.
[mm]
51
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix A—Dimensions
52
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
APPENDIX B—TRIP CURVES
Trip curve drawings show the tripping characteristics for electronic trip molded case circuit breakers for
the various trip unit settings. Properly adjusted trip unit settings will result in the upstream circuit
breaker trip curve falling above and to the right of the downstream (branch) circuit breaker trip curve.
This will result in the downstream circuit breaker tripping first, under overload, inrush and low-level
short-circuit conditions.
53
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
LE, LX AND LXI CIRCUIT BREAKERS
Figure 20. LXI Series 2B 250 A and 400 A Sensor Current Limiting Let-through Curves
54
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 21. LXI Series 2B 600 A Sensor Current Limiting Let-through Curves
55
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 22. LE 250 A, 400 A and 600 A Sensor LS Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
7000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
7000
.6
6000
6000
5000
5000
.5
4000
.75
3000
2000
For withstand breaker, turn instantaneous off.
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.9
LE ELECTRONIC TRIP MOLDED CASE CIR CUIT BREAKERS
LS (LSI) CHARACTERISTIC TRIP CURVE NO. 661-1
MICROLOGIC® Full Function trip unit with adjustable long time pickup and
delay; short time pickup and delay; instantaneous pickup and instantaneous of f.
CIRCUIT BREAKER INFORMA TION
3000
Sensor
(S)
Ampere Rating
(P)
Suitable Rating Plug
Catalog No.
Multiplier
(%)
250
100
125
150
175
200
225
250
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
40
50
60
70
80
90
100
400
300
350
400
ARP075
ARP088
ARP100
75
88
100
600
450
500
600
ARP056
ARP063
ARP100
56
63
100
2000
.8
.95
1500
1500
1000
900
800
1000
900
800
12
700
700
600
600
500
500
8
400
400
300
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
6
8
10
12
14
10
4.5
200
14
3
150
100
90
80
6
300
200
150
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this
trip cur ve also.
2
70
60
2
80000
90000
100000
70000
60000
50000
40000
8000
9000
10000
7000
6000
5000
4000
3000
2000
30000
AMPS
2.5
30
20000
40
15000
50
600A
20
.020
4
15
.015
3
.010
.009
.008
250A
400A
6
.007
TIME IN SECONDS
7
.006
6
5
5
4
3
.005
8
SHORT
TIME
DELAY
BANDS
I 2 t IN
.004
SHORT TIME
PICKUP
xP
7
.003
MAGNETIC
OVERRIDE
TIME IN SECONDS
10
9
8
.002
2
.5
.0015
1.5
.32
1
.9
.8
.2
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
.7
.6
.1
.5
.4
.5
SHORT
TIME
DELAY
BANDS
I 2 t OUT
(FIXED
DELAY)
.3
.2
.8
.7
.6
.5
.4
.3
.32
.2
.2
.15
.15
.1
.09
.08
.1
.07
.07
.06
.05
MAXIMUM
UNRESTRAINED
SHORT TIME
DELAY
.04
.03
2.5
3
4
.06
INSTANTANEOUS
PICKUP
xP
5 6 7 8
.05
.04
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
56
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
.1
.09
.08
INSTANTANEOUS
OVERRIDE
(ELECTRONIC)
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 23. LE 250 A, 400 A and 600 A Sensor LI Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
7000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
7000
.6
6000
6000
CIRCUIT BREAKER INFORMATION
5000
5000
4000
LE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LI CHARACTERISTIC TRIP CURVE NO. 661-2
MICROLOGIC® Full Function trip unit with adjustable long time pickup and
delay; instantaneous pickup.
.5
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.9
.75
3000
2000
.8
.95
1000
900
800
12
600
500
500
8
250
100
125
150
175
200
225
250
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
40
50
60
70
80
90
100
400
300
350
400
ARP075
ARP088
ARP100
75
88
100
600
450
500
600
ARP056
ARP063
ARP100
56
63
100
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
6
8
10
12
14
300
10
4.5
200
14
150
Multiplier
(%)
700
600
400
Suitable Rating Plug2
Catalog No.
1500
1000
900
800
700
Ampere Rating
(P)
3000
2000
1500
Sensor
(S)
3
6
100
90
80
70
300
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
200
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this
trip curve also.
150
2
60
50
80000
90000
100000
70000
60000
50000
40000
30000
20000
8000
9000
10000
7000
6000
5000
4000
3000
2000
30
15000
AMPS
40
600A
20
.020
.015
15
TIME IN SECONDS
.010
.009
.008
250A
400A
7
.007
6
.006
5
.005
.004
4
3
.003
MAGNETIC
OVERRIDE
TIME IN SECONDS
10
9
8
.002
2
.0015
1.5
1
.9
.8
.8
.7
.7
6
.6
.6
.5
.5
.4
.4
.3
.3
.2
.2
7
2.5
.15
2
3
4
5
INSTANTANEOUS
PICKUP
xP
8
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
TIME IN SECONDS
.1
.09
.08
.15
INSTANTANEOUS
OVERRIDE
(ELECTRONIC)
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
57
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 24. LE 250 A, 400 A and 600 A Sensor Ground-Fault Circuit Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
3000
3000
2000
2000
1500
1500
1000
900
800
1000
900
800
700
700
600
600
500
500
400
400
300
300
LE ELECTRONIC TRIP MOLDE D CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 661-5
MICROLOGIC ® Full Function trip unit with adjustable ground fault pickup and
delay.
CIRCUIT BREAKER IN FORMATION
Circuit Breaker Prefix
Sensor (S)
LE (G)
250
400
600
200
GROUND FAULT
PICKUP
xS
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
150
15
150
20
200
100
90
80
100
90
80
.65
70
60
70
60
.3
50
50
.45
40
40
30
30
.2
20
20
.25
.35
15
10
9
8
10
9
8
.55
GROUND
FAULT
BANDS
I 2 t IN
7
6
5
7
6
5
4
3
.2
2
4
DELAY
SECONDS AT 1xS
.10
.20
.32
.50
.32
3
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
.5
.6
.6
.5
.5
.5
GROUND
FAULT
DELAY
BANDS
I 2 t OUT
(FIXED
DELAY)
.4
.3
.2
.1
.4
.3
.32
.2
.2
.15
.15
.1
.1
.09
.08
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
MAXIMUM UNRESTRAINED
GROUND FAULT DELAY
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
150
200
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
58
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
15
.75
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 25. LX AND LXI 250 A, 400 A and 600 A Sensor Circuit Breaker Trip Curve
10000
9000
8000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
1
.7
LX AND LXI ELECTRONIC TRIP
MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 661-3
7000
7000
.6
6000
6000
5000
5000
.5
4000
.9
.75
3000
2000
MICROLOGIC® Standard Function trip unit with adjustable long time pickup
and delay; short time pickup and delay; instantaneous pickup.
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
CIRCUIT BREAKER INFORMATION
3000
Sensor
(S)
Ampere Rating
(P)
Suitable Rating Plug
Catalog No.
Multiplier
(%)
250
100
125
150
175
200
225
250
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
40
50
60
70
80
90
100
400
300
350
400
ARP075
ARP088
ARP100
75
88
100
600
450
500
600
ARP100
ARP063
ARP100
56
63
100
2000
.8
.95
1500
1500
1000
900
800
1000
900
800
12
700
700
600
600
500
500
400
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
6
8
10
12
14
300
8
200
14
150
4.5
100
90
80
2
70
10
300
200
150
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this
trip curve also.
6
3
60
50
80000
90000
100000
70000
60000
50000
40000
30000
600A
20
2
3
15
.020
4
.015
6
5
6
.010
.009
.008
250A
400A
SHORT TIME
PICKUP
xP
7
.007
.006
.005
5
SHORT
TIME
DELAY
BANDS
I 2 t IN
4
3
.004
7
.003
MAGNETIC
OVERRIDE
TIME IN SECONDS
10
9
8
TIME IN SECONDS
20000
8000
9000
10000
7000
6000
5000
4000
3000
2000
30
15000
AMPS
2.5
40
8
2
.002
.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
1.5
.32
1
.9
.8
.2
.0015
.8
.7
.7
.6
.6
.1
.5
.5
.4
.4
.3
.3
.2
.2
INSTANTANEOUS
OVERRIDE
(ELECTRONIC)
.15
2.5
3
4
5 6 7 8
.1
.09
.08
INSTANTANEOUS
PICKUP
xP
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
TIME IN SECONDS
.1
.09
.08
.15
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
59
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 26. LX AND LXI 250 A, 400 A and 600 A Sensor Ground-Fault Circuit Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
3000
3000
Circuit Breaker Prefix
Sensor (S)
2000
2000
LX (G)
LXI (G)
250
400
600
1500
1500
1000
900
800
1000
900
800
700
700
600
600
500
500
400
400
LX AND LXI ELECTRONIC TRIP
MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 661-4
MICROLOGIC® Standard Function trip unit with adjustable ground fault
pickup and delay (G).
CIRCUIT BREAKER INFORMATION
300
300
GROUND FAULT
PICKUP
xS
200
100
90
80
60
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
100
90
80
.65
.45
70
30
150
15
150
20
200
70
60
.3
50
50
.2
40
40
30
30
20
20
15
15
.25
.75
.35
10
9
8
10
9
8
7
.55
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
.6
.6
.5
.5
.5
GROUND
FAULT
DELAY
BANDS
I 2 t OUT
(FIXED
DELAY)
.4
.3
.2
.4
.3
.32
.2
.2
.15
.15
.1
.1
.09
.08
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
60
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
7
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
ME AND MX CIRCUIT BREAKERS
Figure 27. ME 250 A, 400 A and 800 A Sensor LS Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
10000
9000
8000
.7
7000
1
7000
ME ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LS (LSI) CHARACTERISTIC TRIP CURVE NO. 666-7
5000
5000
MICROLOGIC® trip unit with adjustable long time pickup and delay; short time
pickup and delay; instantaneous pickup and instantaneous off.
4000
4000
For withstand breaker instantaneous is off.
6000
.6
.9
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.75
Sensor (S)
.95
600
500
500
7
300
350
400
RP075
RP088
RP100
75
88
100
800
450
500
600
700
800
RP056
RP063
RP075
RP088
RP100
56
63
75
88
100
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
4.5
70
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
80000
90000
100000
70000
60000
50000
40000
30000
150
20000
11
100
90
80
200
6000
20
3
5000
200
300
2000
300
150
400
700
16
600
400
40
50
60
70
80
90
100
1000
900
800
24
700
250
RP040
RP050
RP060
RP070
RP080
RP090
RP100
1500
15000
1000
900
800
Multiplier (%)
100
125
150
175
200
225
250
8000
9000
10000
1500
Suitable Rating Plug
Cat. No.
Ampere Rating (P)
2000
.8
7000
2000
CIRCUIT BREAKER INFORMATION
3000
4000
.5
3000
3000
6000
100
90
80
70
60
60
2.5
50
50
2
40
40
2
30
30
4
20
20
3
15
15
6
10
9
8
TIME IN SECONDS
6
5
4
7
8
3
6
SHORT TIME
PICKUP
XP
5
4
3
10
2
2
.5
1.5
.32
1
.9
.8
.2
.7
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
SHORT TIME DELAY
OVERIDE
250, 400
SENSOR
.1
.6
.5
.3
.2
1
.9
.8
800
SENSOR
.7
.6
.5
SHORT
TIME
DELAY
BANDS
2
1 t OUT
(FIXED
DELAY)
.4
TIME IN SECONDS
SHORT
TIME
DELAY
BANDS
1 2 t IN
7
10
9
8
5
.5
.4
.3
.32
.2
.15
.1
.09
.08
.2
MAXIMUM
UNRESTRAINED
SHORT TIME
DELAY
.15
.1
.09
.08
.1
.07
.07
.06
.06
3
.05
5
4
.04
12
8
INSTANTANEOUS PICKUP
XP
10
6
.05
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
2000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
61
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 28. ME 250 A, 400 A and 800 A Sensor LI Circuit Breaker Trip Curve
7000
.6
6000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
10000
9000
8000
1
.7
6000
5000
5000
.9
4000
4000
2000
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.8
3000
Sensor (S)
Ampere Rating (P)
Suitable Rating Plug
Cat. No.
Multiplier (%)
2000
1500
.95
1500
1000
900
800
24
1000
900
800
250
100
125
150
175
200
225
250
RP040
RP050
RP060
RP070
RP080
RP090
RP100
40
50
60
70
80
90
100
400
300
350
400
RP075
RP088
RP100
75
88
100
800
450
500
600
700
800
RP056
RP063
RP075
RP088
RP100
56
63
75
88
100
700
700
600
600
16
500
400
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
4.5
70
60
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
600
11
100
90
80
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
500
3
200
150
400
20
150
300
200
300
150
7
300
700
500
100
90
80
24
70
60
2
50
50
40
40
30
30
20
20
15
15
10
9
8
10
9
8
7
7
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
.6
.6
.5
.5
.4
.4
.3
.3
.2
.2
2
.15
4
3
.1
.09
.08
6
10
8
5
.15
INSTANTANEOUS
PICKUP
XP
12
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.015
.01
.009
.008
1
1
2 CYCLE
.01
.009
.008
2 CYCLE
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
62
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
For withstand breaker instantaneous is off.
CIRCUIT BREAKER INFORMATION
.75
.5
MICROLOGIC® trip unit with adjustable long time pickup and delay;
instantaneous pickup.
200
3000
ME ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LI CHARACTERISTIC TRIP CURVE NO. 666-8
7000
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 29. ME 250 A Sensor Ground-Fault Circuit Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
ME ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 666-9
MICROLOGIC® trip unit with adjustable ground fault pickup and delay.
CIRCUIT BREAKER INFORMATION
Circuit Breaker Prefix
Sensor (S)
ME (G)
250
800
900
1000
700
150
600
200
150
500
200
400
300
300
400
300
200
500
400
150
600
500
80
90
100
700
600
70
1000
900
800
700
60
1000
900
800
50
1500
40
1500
30
2000
15
2000
20
3000
3000
100
90
80
100
90
80
70
70
.25
60
60
.55
50
50
40
40
.75
.35
30
30
GROUND FAULT
PICKUP
XS
20
.2
15
.45
.3
10
9
8
20
15
.65
10
9
8
7
6
6
GROUND
FAULT
DELAY
BANDS
1 2 t IN
5
4
3
5
DELAY
SECONDS AT 1XS
.10
.20
.32
.50
.5
2
4
3
2
.32
1.5
1.5
.2
TIME IN SECONDS
TIME IN SECONDS
7
1
.9
.8
1
.9
.8
.7
.7
.1
.6
.6
.5
.5
.5
.4
.4
GROUND
FAULT
DELAY
BANDS
1 2 t OUT
(FIXED
DELAY)
.3
.2
.15
.3
.32
MAXIMUM UNRESTRAINED
GROUND FAULT DELAY
.2
.2
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
63
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 30. ME 400 A and 800 A Sensor Ground-fault Circuit Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
ME ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 666-10
MICROLOGIC® trip unit with adjustable ground fault pickup and delay.
CIRCUIT BREAKER INFORMATION
Circuit Breaker Prefix
Sensor (S)
ME (G)
400
800
800
900
1000
700
150
600
200
150
500
300
200
400
400
300
300
500
400
200
600
500
150
700
600
80
90
100
700
70
1000
900
800
60
1000
900
800
50
1500
40
1500
30
2000
15
2000
20
3000
3000
100
90
80
100
90
80
70
70
60
60
.2
50
.45
40
50
40
.65
.3
30
30
GROUND FAULT
PICKUP
XS
20
.25
.55
15
.35
10
9
8
20
15
.75
10
9
8
7
6
6
GROUND
FAULT
DELAY
BANDS
1 2 t IN
5
4
3
5
4
.5
3
DELAY
SECONDS AT 1XS
.10
.20
.32
.50
2
.32
1.5
2
1.5
.2
1
.9
.8
.7
1
.9
.8
.7
.1
.6
.6
.5
.5
.5
.4
GROUND
FAULT
DELAY
BANDS
1 2 t OUT
(FIXED
DELAY)
.3
.2
.15
.4
.3
.32
MAXIMUM UNRESTRAINED
GROUND FAULT DELAY
.2
.1
.09
.08
.2
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
64
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
7
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 31. MX 250 A, 400 A and 800 A Sensor Circuit Breaker Trip Curve
80
90
100
Ampere Rating
(P)
Suitable Rating Plug
Catalog No.
Multiplier
(%)
250
100
125
150
175
200
225
250
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
40
50
60
70
80
90
100
400
300
350
400
ARP075
ARP088
ARP100
75
88
100
800
450
500
600
700
800
ARP056
ARP063
ARP075
ARP088
ARP100
56
63
75
88
100
3000
2000
1500
.95
1000
900
800
700
600
600
500
500
400
7
150
4.5
100
90
80
3
70
300
200
150
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this
trip curve also.
5000
200
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
11
2000
300
4000
16
400
80000
90000
100000
700
70000
20
3000
1000
900
800
60000
.8
1500
50000
2000
Sensor
(S)
40000
.75
3000
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
30000
.9
20000
5000
.5
4000
MICROLOGIC® Standard Function trip unit with adjustable long time pickup and
delay; short time pickup and delay; instantaneous pickup.
CIRCUIT BREAKER INFORMATION
15000
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
6000
8000
9000
10000
5000
7000
.6
6000
MX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 666-11
7000
7000
10000
9000
8000
1
.7
6000
10000
9000
8000
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
100
90
80
70
2
60
60
50
50
2.5
40
40
2
30
30
3
20
20
4
15
10
9
8
10
9
8
5
SHORT
TIME
DELAY
BANDS
I2 t IN
7
6
5
4
7
6
SHORT TIME
PICKUP
xP
6
5
4
8
3
3
10
.5
2
2
.32
1.5
.2
1
.9
.8
.7
.6
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
INSTANTANEOUS
OVERRIDE
(MAGNETIC)
250A, 400A
SENSOR
TIME IN SECONDS
TIME IN SECONDS
15
1
.9
.8
800A
SENSOR
.7
.6
.1
.5
.5
.5
.4
.4
.3
.3
.32
.2
.2
.2
.15
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
3
.05
5
4
.04
12
8
INSTANTANEOUS PICKUP
xP
10
6
.05
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
2000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
65
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 32. MX 250 A, 400 A, and 800 A Sensor Circuit Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
MX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 666-12
7000
7000
6000
6000
5000
5000
MICROLOGIC® Standard Function trip unit with adjustable ground fault pickup
and delay.
CIRCUIT BREAKER INFORMATION
4000
4000
3000
3000
2000
2000
1500
1500
1000
900
800
1000
900
800
700
700
600
600
500
500
400
400
Circuit Breaker Prefix
Sensor (S)
MX (G)
250
400
800
300
300
.25
.55
200
200
.75
.35
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
15
20
150
150
100
90
80
100
90
80
70
70
60
60
50
50
40
40
30
30
GROUND FAULT
PICKUP
xS
20
15
10
9
8
10
9
8
7
.2
6
.45
.3
7
.65
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
GROUND
FAULT
DELAY
BANDS
I 2 t OUT
(FIXED
DELAY)
.6
.5
.4
.3
.6
.5
.5
.4
.3
.32
DELAY
SECONDS
.2
.2
.2
.15
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
150
200
80
90
100
70
50
60
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
66
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
20
15
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
NE AND NX CIRCUIT BREAKERS
Figure 33. NE 600 A and 1200 A Sensor LS Circuit Breaker Trip Curve
100
80
90
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
NE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LS (LSI) CHARACTERISTIC TRIP CURVE NO. 671-10
10000
9000
8000
.7
7000
4000
.9
MICROLOGIC® trip unit with adjustable long time pickup and delay; short
time pickup and delay; instantaneous pickup and instantaneous off.
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.75
4000
For withstand breaker instantaneous is off.
2000
.95
1000
900
800
700
16
600
500
500
7
1200
RP050
RP058
RP067
RP075
RP083
RP100
Multiplier (%)
50
58
67
75
83
100
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
4.5
70
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
11
100
90
80
200
150
8000
9000
10000
20
3
7000
200
300
2000
300
150
Suitable Rating Plug
Cat. No.
600
700
800
900
1000
1200
1000
900
800
600
400
Ampere
Rating (P)
1500
24
700
Sensor (S)
2000
.8
1500
CIRCUIT BREAKER INFORMATION
3000
6000
.5
3000
5000
6000
.6
5000
5000
6000
1
4000
7000
3000
.7
.8
.9
1
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
100
90
80
70
60
60
2.5
50
50
2
40
40
2
30
30
4
20
20
3
15
15
6
10
9
8
TIME IN SECONDS
6
5
4
7
8
3
6
SHORT TIME
PICKUP
XP
5
4
3
10
2
2
.5
1.5
.32
1
.9
.8
.2
.7
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
1
.9
.8
SHORT TIME DELAY
OVERRIDE
.7
.1
.6
.5
.3
.2
.6
.5
SHORT
TIME
DELAY
BANDS
2
1 t OUT
(FIXED
DELAY)
.4
TIME IN SECONDS
SHORT
TIME
DELAY
BANDS
1 2 t IN
7
10
9
8
5
.5
.4
.3
.32
MAXIMUM
UNRESTRAINED
SHORT TIME
DELAY
.2
.15
.1
.09
.08
.2
.15
.1
.09
.08
.1
.07
.07
.06
.06
3
.05
5
4
.04
12
8
INSTANTANEOUS PICKUP
XP
10
6
.05
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
67
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 34. NE 600 A and 1200 A Sensor LI Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
10000
9000
8000
10000
9000
8000
1
6000
5000
5000
4000
4000
.9
CIRCUIT BREAKER INFORMATION
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.75
3000
Ampere
Rating(P)
Sensor(S)
.8
1500
.95
1000
900
800
24
700
700
600
600
16
8000
9000
10000
7000
6000
5000
100
90
80
4.5
70
60
70
60
2
50
50
40
40
30
30
20
20
15
15
10
9
8
10
9
8
7
7
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
.6
.6
.5
.5
.4
.4
.3
.3
.2
.2
2
.15
4
3
.1
.09
.08
6
10
5
8
.15
INSTANTANEOUS
PICKUP
XP
12
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
8000
9000
10000
7000
5000
6000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
68
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
150
4000
11
3000
3
100
90
80
200
500
20
300
400
200
150
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
7
300
50
58
67
75
83
100
500
400
150
500
Multiplier(%)
RP050
RP058
RP067
RP075
RP083
RP100
NOTE: Ampererating(P) = Sensor(S) x ratingplugmultiplier(%)
300
1000
900
800
1200
200
1500
SuitableRatingPlug
Cat. No.
600
700
800
900
1000
1200
2000
2000
2000
.5
MICROLOGIC® trip unit with adjustable long time pickup and delay;
instantaneouspickup.
1500
3000
NE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LI CHARACTERISTIC TRIP CURVE NO. 671-11
7000
800
900
1000
.6
6000
.7
700
7000
600
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 35. NE 600 A and 1200 A Sensor Ground-Fault Circuit Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
NE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 671-12
MICROLOGIC® trip unit with adjustable ground fault pickup and delay.
CIRCUIT BREAKER INFORMATION
Circuit Breaker Prefix
Sensor (S)
NE (G)
1200
800
900
1000
700
150
600
200
150
500
200
400
300
300
400
300
200
500
400
150
600
500
80
90
100
700
600
70
1000
900
800
700
60
1000
900
800
50
1500
40
1500
30
2000
15
2000
20
3000
3000
100
90
80
100
90
80
70
70
60
50
60
.45
.2
50
.3
40
.65
40
30
30
GROUND FAULT
PICKUP
XS
20
.25
.55
15
15
.75
.35
10
9
8
20
10
9
8
7
6
6
GROUND
FAULT
DELAY
BANDS
1 2 t IN
5
4
3
5
4
.5
3
DELAY
SECONDS AT 1XS
.10
.20
.32
.50
2
1.5
.32
1
.9
.8
2
1.5
1
.9
.8
.2
.7
.7
.1
.6
TIME IN SECONDS
TIME IN SECONDS
7
.6
.5
.5
.5
.4
.4
GROUND
FAULT
DELAY
BANDS
1 2 t OUT
(FIXED
DELAY)
.3
.2
.15
.3
.32
MAXIMUM UNRESTRAINED
GROUND FAULT DELAY
.2
.2
.15
.1
.09
.08
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
69
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 36. NX 250 A, 600 A and 1200 A Sensor Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
10000
9000
8000
.6
.9
7000
7000
6000
50
58
67
75
83
100
1200
600
700
800
900
1000
1200
ARP050
ARP058
ARP067
ARP075
ARP083
ARP100
50
58
67
75
83
100
16
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
3
150
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit breaker.
Circuit breakers using other appropriate rating plugs shall use this trip curve also.
4000
4.5
200
3000
7
300
2000
24
11
80000
90000
100000
400
70000
500
400
70
ARP050
ARP058
ARP067
ARP075
ARP083
ARP100
60000
600
500
100
90
80
300
350
400
450
500
600
50000
700
600
150
600A
DRAWOUT
ONLY
40000
20
700
200
40
50
60
70
80
90
100
30000
1000
900
800
300
250A
DRAWOUT
ONLY
1500
.95
1000
900
800
Multiplier
(%)
ARP040
ARP050
ARP060
ARP070
ARP080
ARP090
ARP100
20000
2000
1500
Suitable Rating Plug
Catalog No.
100
125
150
175
200
225
250
15000
3000
.8
2000
Ampere Rating
(P)
8000
9000
10000
.75
3000
Sensor
(S)
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
7000
1
4000
6000
5000
.7
.5
5000
6000
5000
NX ELECTRONIC TRIP MOLDED CASE CI RCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 671-13
MICROLOGIC ® Standard Function trip unit with adjustable long time pickup and
delay; short time pickup and delay, and instantaneous pickup.
CIRCUIT BREAKER IN FORMATION
100
90
80
70
2
60
60
50
50
2.5
40
40
2
30
30
3
20
20
4
15
10
9
8
10
9
8
5
SHORT
TIME
DELAY
BANDS
I2 t IN
7
6
5
4
7
6
5
6
4
8
3
3
10
.5
2
2
.32
1.5
1.5
.2
1
.9
.8
.7
.6
.1
.5
.5
.4
1
.9
.8
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
.7
INSTANTANEOUS
OVERRIDE
(MAGNETIC)
.6
.5
.4
.3
.3
.32
.2
.2
.2
.15
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
3
.05
5
4
.04
12
8
INSTANTANEOUS PICKUP
xP
10
6
.05
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
2000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
70
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
15
SHORT TIME
PICKUP
xP
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 37. NX 250 A, 600 A and 1200 A Sensor Ground-Fault Circuit Breaker Trip Curve
8
9
10
400
300
300
200
200
150
150
100
90
80
.25
70
800
900
1000
500
400
700
600
500
600
700
600
500
1000
900
800
700
400
1000
900
800
250
600
1200
300
1500
Sensor (SI)
NX (G)
200
2000
1500
15
2000
Circuit Breaker Prefix
150
3000
80
90
100
4000
3000
70
5000
4000
60
6000
5000
50
6000
NX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 671-14
MICROLOGIC® Standard Function trip unit with adjustable ground fault pickup
and delay (G).
CIRCUIT BREAKER INFORMATION
40
7000
30
10000
9000
8000
7000
20
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
100
90
80
.55
.35
70
60
60
50
50
40
40
.75
.2
30
30
GROUND FAULT
PICKUP
xS
20
20
15
15
.45
.65
10
9
8
10
9
8
7
7
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
TIME IN SECONDS
TIME IN SECONDS
.3
.6
.6
.5
.5
.5
.4
GROUND
FAULT
DELAY
BANDS
I 2 t OUT
(FIXED
DELAY)
.3
.2
.15
.4
.3
.32
DELAY
SECONDS
.2
.2
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
71
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
PE AND PX CIRCUIT BREAKERS
Figure 38. PE 1200 A and 1600 A Sensor LS Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
.6
6000
5000
5000
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/-7.5%) TIMES THE SETTING
.9
4000
.75
MICROLOGIC® trip unit with adjustable long time pickup and delay; short
time pickup and delay; instantaneous pickup and instantaneous off.
For withstand breaker instantaneous is off.
3000
CIRCUIT BREAKER INFORMATION
2000
2000
.8
1500
.95
Sensor (S)
Ampere
Rating (P)
Suitable Rating Plug
Cat. No.
Multiplier (%)
1200
600
700
800
900
1000
1200
RP050
RP058
RP067
RP075
RP083
RP100
50
58
67
75
83
100
1600
1400
1600
RP088
RP100
88
100
1500
24
1000
900
800
16
700
600
600
500
500
7
400
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
4.5
80000
90000
100000
70000
60000
50000
40000
30000
150
20000
11
100
90
80
200
15000
20
3
150
NOTE: (P) = Sensor (S) x rating plug multiplier (%)
8000
9000
10000
200
300
2000
300
7000
700
6000
1000
900
800
5000
.5
3000
4000
4000
6000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LS (LSI) CHARACTERISTIC TRIP CURVE NO. 677-17
7000
3000
7000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
100
90
80
70
70
2.5
60
2
50
60
50
40
40
2
30
4
20
30
20
3
15
15
6
10
9
8
6
5
7
7
6
5
8
4
4
3
3
2
2
.5
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
.32
.2
1
.9
.8
1.5
1
.9
.8
SHORT TIME DELAY
OVERRIDE
.1
.7
.7
.6
.6
SHORT
TIME
DELAY
BANDS
2
1 t OUT
(FIXED
DELAY)
.5
.4
.3
.5
.5
.4
.3
.32
MAXIMUM
UNRESTRAINED
SHORT TIME
DELAY
.2
.2
.15
.1
.09
.08
.2
.15
.1
.09
.08
.1
.07
.07
.06
3
.05
5
4
2.5
.06
INSTANTANEOUS PICKUP
XP
7
6
8
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
72
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
7
10
9
8
SHORT TIME
PICKUP
XP
5
SHORT
TIME
DELAY
BANDS
1 2 t IN
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 39. PE 1200 A and 1600 A Sensor LI Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
6000
.6
.9
.75
.95
1500
1000
900
800
24
700
700
LONG TIME
DELAY BANDS
1400
1600
RP088
RP100
88
100
4.5
70
8000
9000
10000
7000
6000
5000
4000
3000
2000
11
1500
3
200
150
150
20
100
90
80
300
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
200
100
90
80
70
24
2
60
1600
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
400
7
150
50
58
67
75
83
100
500
400
300
1200
RP050
RP058
RP067
RP075
RP083
RP100
600
16
500
Multiplier (%)
600
700
800
900
1000
1200
200
600
Suitable Rating Plug
Cat. No.
Ampere Rating (P)
800
900
1000
1000
900
800
Sensor (S)
2000
.8
1500
CIRCUIT BREAKER INFORMATION
3000
700
2000
4000
600
.5
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/-7.5%) TIMES THE SETTING
500
4000
60
50
50
40
40
30
30
20
20
15
15
10
9
8
10
9
8
7
7
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
.6
.6
.5
.5
.4
.4
.3
.3
.2
2
.15
3
5
4
2.5
.2
7
6
TIME IN SECONDS
TIME IN SECONDS
MICROLOGIC® trip unit with adjustable long time pickup and delay; instantaneous pickup.
5000
5000
3000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LI CHARACTERISTIC TRIP CURVE NO. 677-18
7000
400
6000
10000
9000
8000
1
.7
7000
300
10000
9000
8000
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
.15
8
INSTANTANEOUS
PICKUP
XP
.1
.09
.08
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
7000
6000
5000
4000
3000
8000
9000
10000
MULTIPLES OF AMPERE RATING (P)
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
73
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 40. PE 1200 A and 1600 A Sensor Ground-Fault Breaker Trip Curve
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 677-19
MICROLOGIC® trip unit with adjustable ground fault pickup and delay.
CIRCUIT BREAKER INFORMATION
Circuit Breaker Prefix
Sensor (S)
PE (G)
1200
1600
800
900
1000
150
700
200
150
600
200
500
300
400
400
300
300
500
400
200
600
500
150
700
600
80
90
100
700
70
1000
900
800
60
1000
900
800
50
1500
40
1500
30
2000
15
2000
20
3000
3000
100
90
80
100
90
80
70
70
60
60
.45
.2
50
50
.3
40
.65
40
30
30
GROUND FAULT
PICKUP
XS
20
.25
.55
15
.35
10
9
8
20
15
.75
10
9
8
7
6
6
GROUND
FAULT
DELAY
BANDS
1 2 t IN
5
4
3
5
4
.5
3
DELAY
SECONDS AT 1XS
.10
.20
.32
.50
2
.32
1.5
.2
1
.9
.8
.7
2
1.5
1
.9
.8
.7
.1
.6
.6
.5
.5
.5
.4
.4
GROUND
FAULT
DELAY
BANDS
1 2 t OUT
(FIXED
DELAY)
.3
.2
.15
.3
.32
MAXIMUM UNRESTRAINED
GROUND FAULT DELAY
.2
.1
.09
.08
.2
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
74
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
7
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 41. PE 2000 A Sensor LS Circuit Breaker Trip Curve
10000
9000
8000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
7000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
.6
6000
6000
5000
5000
.9
4000
.5
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/-7.5%) TIMES THE SETTING
.75
3000
4000
2000
.8
.95
1000
900
800
16
700
For withstand breaker instantaneous is off.
CIRCUIT BREAKER INFORMATION
Sensor (S)
1500
24
1000
900
800
MICROLOGIC® trip unit with adjustable long time pickup and delay; short time
pickup and delay; instantaneous pickup and instantaneous off.
3000
2000
1500
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LS (LSI) CHARACTERISTIC TRIP CURVE NO. 677-20
7000
Ampere Rating (P)
Suitable Rating Plug
Cat. No.
1800
2000
2000
Multiplier (%)
90
100
RP090
RP100
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
700
600
600
500
500
7
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
4.5
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
150
6000
11
100
90
80
200
5000
20
3
150
4000
200
300
3000
300
2000
400
100
90
80
70
70
60
60
2.5
2
50
50
40
40
2
30
4
20
30
20
3.5
SHORT TIME
PICKUP
XP
15
3
10
9
8
5
7
6
5
4.5
4
4
SHORT TIME DELAY
OVERRIDE
SHORT TIME DELAY
OVERRIDE
3
3
.5
2
2
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
1.5
.32
1
.9
.8
.2
1.5
1
.9
.8
.1
.7
TIME IN SECONDS
TIME IN SECONDS
6
15
10
9
8
SHORT
TIME
DELAY
BANDS
1 2 t IN
7
6
5
.7
.6
.6
.5
SHORT
TIME
DELAY
BANDS
1 2 t OUT
(FIXED
DELAY)
.4
.3
.5
.5
.4
.3
.32
MAXIMUM
UNRESTRAINED
SHORT TIME
DELAY
.2
.2
.15
3.5
.1
.09
.08
.2
.15
4.5
.1
.09
.08
.1
.07
.07
.06
3
.05
4
2.5
.06
INSTANTANEOUS PICKUP
XP
5
6
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
75
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 42. PE 2000 A Sensor LI Circuit Breaker Trip Curve
10000
9000
8000
6000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
7000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
6000
.6
5000
5000
4000
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.9
.5
3000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LI CHARACTERISTIC TRIP CURVE NO. 677-21
7000
.75
MICROLOGIC® trip unit with adjustable long time pickup and delay;
instantaneous pickup.
4000
CIRCUIT BREAKER INFORMATION
3000
Sensor (S)
2000
2000
Suitable Rating Plug
Cat. No.
1800
2000
2000
.8
1500
Ampere Rating (P)
Multiplier (%)
90
100
RP090
RP100
1500
.95
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
1000
900
800
1000
900
800
24
700
700
600
600
16
500
500
400
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
4.5
70
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
100
90
80
70
24
60
2
50
500
11
100
90
80
150
400
3
200
300
20
150
200
200
300
150
7
300
60
50
2.5
40
40
30
30
20
20
15
15
10
9
8
10
9
8
7
7
6
6
5
5
4.5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
INSTANTANEOUS
PICKUP
XP
.6
.5
.6
.5
.4
.4
.3
.3
2
.2
3
.2
6
4
2.5
.15
5
.15
.1
.09
.08
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
76
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
3.5
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 43. PE 2500 A Sensor LS Circuit Breaker Trip Curve
10000
9000
8000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
7000
1.5
.7
.8
.9
1
.5
.6
MULTIPLES OF AMPERE RATING (P)
.6
6000
6000
5000
5000
.9
4000
.5
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/-7.5%) TIMES THE SETTING
.75
3000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LS (LSI) CHARACTERISTIC TRIP CURVE NO. 677-22
7000
4000
MICROLOGIC® trip unit with adjustable long time pickup and delay; short time
pickup and delay; instantaneous pickup and instantaneous off. For withstand
breaker instantaneous is off.
CIRCUIT BREAKER INFORMATION
3000
Sensor (S)
Ampere Rating (P)
Suitable Rating Plug
Cat. No.
Multiplier (%)
RP100
100
2000
2000
.8
1500
2500
.95
1500
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
24
1000
900
800
1000
900
800
16
700
2500
700
600
600
500
500
7
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
4.5
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
11
100
90
80
200
150
5000
20
3
150
4000
200
300
3000
300
2000
400
100
90
80
70
70
60
60
2.5
2
50
50
2
40
40
30
4
30
SHORT TIME
PICKUP
XP
2.2
20
3.5
20
15
15
3
10
9
8
6
5
4
10
9
8
7
6
SHORT TIME DELAY
OVERRIDE
5
SHORT TIME DELAY
OVERRIDE
5
4
3
3
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
.5
2
.32
1.5
1
.9
.8
2
1.5
1
.9
.8
.2
.7
.1
.7
TIME IN SECONDS
TIME IN SECONDS
4.5
SHORT
TIME
DELAY
BANDS
1 2 t IN
7
.6
.6
.5
.5
SHORT
TIME
DELAY
BANDS
2
1 t OUT
(FIXED
DELAY)
.4
.3
.2
.5
.4
.3
.32
MAXIMUM
UNRESTRAINED
SHORT TIME
DELAY
.2
.15
3.5
.1
.09
.08
.2
.15
4.5
.1
.09
.08
.1
.07
.07
2.5
.06
3
.05
4
2.2
.06
INSTANTANEOUS PICKUP
XP
5
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
77
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 44. PE 2500 A Sensor LI Circuit Breaker Trip Curve
10000
9000
8000
6000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
.7
7000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
6000
.6
5000
5000
4000
LONG TIME PICKUP
XP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.9
.5
3000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
LI CHARACTERISTIC TRIP CURVE NO. 677-23
7000
.75
MICROLOGIC® trip unit with adjustable long time pickup and delay;
instantaneous pickup.
4000
CIRCUIT BREAKER INFORMATION
3000
Sensor (S)
2000
2000
.8
.95
1500
2500
Ampere Rating (P)
Suitable Rating Plug
Cat. No.
Multiplier (%)
RP100
100
2500
1500
NOTE: Ampere rating (P) = Sensor (S) x rating plug multiplier (%)
1000
900
800
1000
900
800
24
700
700
600
600
16
500
500
400
400
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
4.5
70
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
100
90
80
70
24
60
2
50
500
11
400
3
100
90
80
200
150
300
20
150
200
200
300
150
7
300
60
50
2.5
40
40
30
30
3.5
20
20
15
15
10
9
8
7
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
INSTANTANEOUS
PICKUP
XP
.6
.5
.6
.5
.4
.4
.3
.3
2.2
5
3
.2
.2
.15
.15
2
4
.1
.09
.08
.1
.09
.08
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
MULTIPLES OF AMPERE RATING (P)
78
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
TIME IN SECONDS
10
9
8
4.5
7
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 45. PE 2000 A and 2500 A Sensor Ground-Fault Circuit Breaker Trip Curve
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
AMPERES
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
PE ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 677-24
MICROLOGIC® trip unit with adjustable ground fault pickup and delay.
CIRCUIT BREAKER INFORMATION
Circuit Breaker Prefix
Sensor (S)
PE (G)
2000
2500
100
90
80
800000
900000
1000000
700000
150
600000
200
150
500000
300
200
400000
400
300
300000
500
400
200000
600
500
150000
700
600
80000
90000
100000
700
70000
1000
900
800
60000
1000
900
800
50000
1500
40000
1500
30000
2000
15000
2000
20000
3000
3000
100
90
80
720
70
70
1120
60
50
60
50
800
40
40
GROUND FAULT
PICKUP
AMP
30
20
880
30
20
1200
15
15
640
10
9
8
10
9
8
1040
7
6
6
5
5
4
4
960
3
3
DELAY
SECONDS AT 2000A
.10
.20
.32
.50
2
1.5
GROUND FAULT
DELAY BANDS
1 2 t IN
1
.9
.8
.5
2
1.5
1
.9
.8
32
.7
TIME IN SECONDS
TIME IN SECONDS
7
.7
.6
.6
.5
.5
.2
.5
.4
.4
.3
.3
.32
GROUND FAULT
DELAY BANDS
1 2 t OUT
(FIXED DELAY)
.2
.15
.1
MAXIMUM UNRESTRAINED
GROUND FAULT DELAY
.2
.1
.09
.08
.2
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
700000
600000
500000
400000
300000
800000
900000
1000000
AMPERES
200000
150000
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
.005
70
.006
.005
60
.007
.006
50
.007
79
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 46. PX 1200 A and 1600 A Sensor Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
CIRCUIT BREAKER INFORMATION
5000
.5
2000
.9
1000
900
800
20
700
700
600
600
500
500
400
16
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
16
10
20
24
3
70
ARP088
ARP100
88
100
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this
trip curve also.
300
200
80000
90000
100000
70000
60000
50000
150
40000
4.5
100
90
80
1400
1600
30000
7
150
1600
20000
24
11
200
50
58
67
75
83
100
2000
300
1200
4000
400
Multiplier
(%)
ARP050
ARP058
ARP067
ARP075
ARP083
ARP100
1500
.95
1000
900
800
Suitable Rating Plug
Catalog No.
600
700
800
900
1000
1200
3000
2000
1500
Ampere Rating
(P)
15000
.8
Sensor
(S)
8000
9000
10000
.75
3000
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
5000
4000
7000
8
9
10
7
6
5
4
3
2
1.5
6000
MICROLOGIC® Standard Function trip unit with adjustable long time pickup and
delay; short time pickup and delay; instantaneous pickup.
3000
5000
7000
.6
6000
PX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 677-25
10000
9000
8000
1
.7
7000
6000
10000
9000
8000
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
100
90
80
70
2
60
60
50
50
40
40
2.5
30
30
3
2
20
20
4
15
10
9
8
10
9
8
5
6
5
4
SHORT TIME
PICKUP
xP
8
6
7
6
5
4
7
3
3
.5
2
2
.32
1.5
.2
1
.9
.8
.7
.6
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
1
.9
.8
INSTANTANEOUS
OVERRIDE
(MAGNETIC)
.1
.7
.6
.5
.5
.5
.4
.4
.3
.3
.32
.2
.2
.2
.15
.15
7
.1
.09
.08
6
.1
.09
.08
.1
.07
.07
3
INSTANTANEOUS
PICKUP
xP
.06
.05
2.5
.06
4
5
8
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
.007
.007
.006
.006
.005
AMPERES
80
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
7000
6000
5000
4000
3000
8000
9000
10000
MULTIPLES OF AMPERE RATING (P)
2000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.005
TIME IN SECONDS
SHORT
TIME
DELAY
BANDS
I2 t IN
7
TIME IN SECONDS
15
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 47. PX 1200 A and 1600 A Sensor Ground-Fault Circuit Breaker Trip Curve
8
9
10
600
500
500
400
400
300
300
200
200
150
150
.25
100
90
80
.55
.35
800
900
1000
700
600
700
1000
900
800
700
600
1000
900
800
500
1500
1200
1600
400
2000
1500
Sensor (S)
PX (G)
300
2000
Circuit Breaker Prefix
200
3000
150
4000
3000
80
90
100
4000
MICROLOGIC® Standard Functon trip unit with adjustable ground fault pickup
and delay.
CIRCUIT BREAKER INFORMATION
70
5000
60
6000
5000
50
6000
PX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 677-26
40
7000
30
10000
9000
8000
7000
15
10000
9000
8000
20
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.07
.06
.05
MULTIPLES OF SENSOR RATING (S)
100
90
80
70
70
60
60
50
50
40
40
.75
.2
30
30
GROUND FAULT
PICKUP
xS
20
.3
.45
.65
20
15
10
9
8
10
9
8
7
7
6
6
5
5
4
4
3
3
2
2
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
.6
.6
TIME IN SECONDS
TIME IN SECONDS
15
.5
.5
.5
.4
GROUND
FAULT
DELAY
BANDS
I 2 t OUT
(FIXED
DELAY)
.3
.2
.15
.4
.3
.32
DELAY
SECONDS
.2
.2
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
1 CYCLE
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
800
900
1000
600
700
500
400
300
150
200
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.4
.3
.2
.15
.08
.09
.1
.005
.07
.006
.005
.06
.007
.006
.05
.007
MULTIPLES OF SENSOR RATING (S)
81
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 48. PX 2000 A Sensor Circuit Breaker Trip Curve
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
7000
7000
.6
6000
6000
.7
.5
5000
.95
4000
.8
MICROLOGIC® Standard Function trip unit with adjustable long time pickup and
delay; short time pickup and delay; instantaneous pickup.
CIRCUIT BREAKER INFORMATION
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.75
3000
PX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 677-27
3000
Sensor
(S)
Ampere Rating
(P)
Suitable Rating Plug
Catalog No.
Multiplier
(%)
2000
1800
2000
ARP088
ARP100
88
100
2000
2000
1500
.9
1500
1000
900
800
1000
900
800
20
700
700
600
600
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this trip
curve also.
500
500
400
16
100
90
80
3
70
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
150
100
90
80
70
2
60
200
7000
4.5
6000
7
150
300
5000
11
200
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
18
20
24
24
2000
300
4000
400
3000
5000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
10000
9000
8000
2.5
60
50
50
3
40
40
30
30
3.5
2
20
20
4
15
10
9
8
10
9
8
4.5
SHORT TIME
PICKUP
xP
6
6
5
4
7
6
5
5
4
3
3
2
2
1.5
.5
1
.9
.8
.32
.7
.6
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
1
.9
.8
INSTANTANEOUS
OVERRIDE
(MAGNETIC)
.2
.5
.7
.6
.5
.5
.4
.4
.1
.3
.3
.32
5
.2
.2
2.5
INSTANTANEOUS
PICKUP
xP
.1
.09
.08
.2
4.5
.15
4
.15
6
.1
.09
.08
.1
3.5
.07
.07
.06
.06
3
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
.007
.007
.006
.006
.005
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
7000
6000
5000
4000
3000
8000
9000
10000
MULTIPLES OF AMPERE RATING (P)
2000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.7
.6
.5
.005
AMPERES
82
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
TIME IN SECONDS
SHORT
TIME
DELAY
BANDS
I 2 t IN
7
TIME IN SECONDS
15
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 49. PX 2000 A and 2500 A Sensor Ground-Fault Circuit Breaker Trip Curve
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
70
60
50
AMPERES
PX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CUR
VE NO. 677-28
10000
9000
8000
10000
9000
8000
7000
7000
6000
6000
5000
5000
4000
4000
Circuit Br eaker Pr efix
Sensor (S)
3000
3000
PX (G)
2000
2500
2000
2000
1500
1500
1000
900
800
MICROLOGIC
and delay .
®
Standar d Function trip unit with adjustable gr
CIRCUIT BREAKER INFORMA
ound fault pickup
TION
1000
900
800
1200
700
700
600
600
500
500
400
400
300
300
100
90
80
800000
900000
1000000
700000
600000
500000
400000
300000
200000
150000
80000
90000
100000
70000
60000
50000
40000
150
30000
200
150
15000
200
20000
1120
100
90
80
1040
70
70
60
60
50
50
960
40
40
30
30
GROUND FAULT
PICKUP
AMPERES
880
20
20
15
15
10
9
8
10
9
8
800
7
7
6
6
5
720
4
TIME IN SECONDS
TIME IN SECONDS
5
4
3
3
2
2
640
1.5
1.5
1
.9
.8
1
.9
.8
.7
.7
GROUND
FAULT
DELAY
BANDS
I 2t OUT
(FIXED
DELAY)
.6
.5
.4
.3
.6
.5
.5
.4
.3
DELAY
SECONDS
.32
.2
.2
.2
.15
.1
.09
.08
.15
.1
.09
.08
.1
.07
.07
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
.015
.01
.009
.008
1
2
1 CYCLE
1
CYCLE
2
.015
.01
.009
.008
CYCLE
800000
900000
1000000
700000
600000
500000
400000
300000
200000
150000
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
2000
1500
800
900
1000
700
600
500
400
300
200
150
80
90
100
.005
70
.006
.005
60
.007
.006
50
.007
AMPERES
83
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Appendix B—Trip Curves
Figure 50. PX 2500 A Sensor Circuit Breaker Trip Curve
10000
9000
8000
80
90
100
70
60
50
40
30
20
15
8
9
10
7
6
5
4
3
2
10000
9000
8000
1
7000
7000
.6
6000
6000
.95
.7
.5
5000
CIRCUIT BREAKER INFORMATION
4000
4000
LONG TIME PICKUP
xP
PICKUP POINT IS 1.075
(+/- 7.5%) TIMES THE SETTING
.75
3000
3000
.8
2000
1500
2000
1500
.9
1000
900
800
PX ELECTRONIC TRIP MOLDED CASE CIRCUIT BREAKERS
CHARACTERISTIC TRIP CURVE NO. 677-29
MICROLOGIC® Standard Function trip unit with adjustable long time pickup and
delay; short time pickup and delay; instantaneous pickup.
1000
900
800
20
700
700
600
600
Sensor
(S)
Ampere Rating
(P)
Suitable Rating Plug
Catalog No.
Multiplier
(%)
2500
2500
ARP100
100
NOTE:
(1) Ampere rating (P) = Sensor (S) x rating plug multiplier.
(2) Rating plugs shown reflect those supplied factory installed in the circuit
breaker. Circuit breakers using other appropriate rating plugs shall use this
trip curve also.
500
500
400
16
100
90
80
3
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
150
7000
4.5
200
6000
7
150
300
5000
200
LONG TIME
DELAY BANDS
SECONDS AT 6P
2
3
4.5
7
11
16
20
24
24
11
2000
300
4000
400
3000
5000
1.5
.8
.9
1
.7
.6
.5
MULTIPLES OF AMPERE RATING (P)
100
90
80
2.2
70
70
2
60
60
50
50
40
40
2.5
30
30
3
2
20
20
15
15
3.5
10
9
8
SHORT
TIME
DELAY
BANDS
I 2 t IN
6
5
4
SHORT TIME
PICKUP
xP
7
6
4.5
5
4
3
3
2
2
1.5
.5
1
.9
.8
.32
.7
.6
1.5
SHORT TIME DELAY
SECONDS AT 12P
.10
.20
.32
.50
1
.9
.8
INSTANTANEOUS
OVERRIDE
(MAGNETIC)
.2
.7
.6
.5
.5
.5
.4
.4
.1
4.5
.3
.3
.32
4
.2
.2
2.2
.2
.15
3.5
INSTANTANEOUS
PICKUP
xP
.1
.09
.08
.15
5
3
.1
.09
.08
.1
.07
.07
2.5
.06
.06
.05
.05
.04
.04
.03
.03
.02
.02
1 CYCLE
1 CYCLE
.015
.01
.009
.008
1
1
2 CYCLE
.015
.01
.009
.008
2 CYCLE
MULTIPLES OF AMPERE RATING (P)
80000
90000
100000
70000
60000
50000
40000
30000
20000
15000
8000
9000
10000
7000
6000
5000
4000
3000
2000
80
90
100
70
60
50
40
30
20
15
10
8
7
6
5
4
3
2
1.5
.8
.9
1
.005
.7
.006
.005
.6
.007
.006
.5
.007
AMPERES
84
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TIME IN SECONDS
TIME IN SECONDS
10
9
8
5
4
7
Electronic Trip Molded Case Circuit Breakers
Glossary
GLOSSARY
accessory. An electrical or mechanical device
that performs a secondary or minor function
apart from overcurrent protection.
AIC. See AIR
AIR. Abbreviation for amps interrupting rating.
alarm switch or bell alarm. A mechanicallyoperated switch which indicates when a
circuit breaker has tripped due to overcurrent
conditions.
ambient temperature rating. The temperature
of the air immediately surrounding the circuit
breaker which can affect the thermal
(overload) tripping characteristics of thermalmagnetic circuit breakers. Electronic trip
circuit breakers, however, are insensitive to
normal (-20 to 50°C) ambient conditions.
ammeter/trip indicator or local current meter/
trip indicator. A module that mounts directly
to the circuit breaker trip unit. The ammeter
(current meter) reports rms phase and
ground-fault current values as seen by the trip
unit. Current values are displayed one phase
at a time. The trip indicator displays whether
the circuit breaker tripped due to an overload,
short-circuit or ground-fault condition.
auxiliary switch. A switch mechanically
operated by the main device for signaling,
interlocking, or other purposes.
bell alarm. see alarm switch.
branch circuit. The circuit conductor between
the final overcurrent device protecting the
circuit and the outlet(s).
circuit breaker. A device designed to open and
close a circuit by non-automatic means and to
open the circuit automatically on an
overcurrent without damage to itself when
properly applied within its rating.
circuit breaker frame. The circuit breaker
housing which contains the current carrying
components, the current sensing
components, and the tripping and operating
mechanism.
coil clearing switch. A mechanically-operated
switch in series with the coil of a shunt trip
device which breaks the coil current when the
circuit breaker opens.
continuous current rating (handle rating). The
designated rms alternating current in
amperes which a device or assembly will
carry continuously in free air without tripping
or exceeding temperature limits.
continuous load. A load where the maximum
current on the circuit is expected to continue
for three hours or more.
CSA. Canadian Standards Association.
CT. Abbreviation for current transformer.
current path. The current-carrying conductors
within a circuit breaker between, and
including, line and load terminations.
current sensor. see current transformer.
current transformer or current sensor (CT). An
instrument to measure current, encircling a
conductor carrying the current to be
measured or controlled.
electrical operator or motor operator. An
electrical controlling device which is used to
open and close a circuit breaker or switch and
reset a circuit breaker.
electronic trip circuit breaker. A circuit breaker
which uses current sensors and electronic
circuitry to sense, measure and respond to
current levels.
frame size. A group of circuit breakers of similar
physical configuration. Frame size is
expressed in amperes, corresponding to the
largest ampere rating available in the group.
frequency. The number of cycles per second for
an alternating current system.
frequency rating. The range of frequencies
within which a product can be applied.
ground fault. An unintentional current path,
through ground, back to the source.
ground-fault delay. The length of time the circuit
breaker trip unit will delay before initiating a
trip signal to the circuit breaker after a ground
fault has been detected.
ground-fault module. An electronic accessory
used in combination with thermal-magnetic
circuit breakers to provide branch circuit
ground-fault protection and ground-fault
indication.
ground-fault pickup. The level of ground-fault
current at which the trip system begins timing.
handle rating. See continuous current rating.
IEC. International Electrotechnical Commission
instantaneous pickup. The current level at
which the circuit breaker will trip with no
intentional time delay.
instantaneous trip. A qualifying term indicating
that no delay is purposely introduced in the
tripping action of the circuit breaker during
short-circuit conditions.
integral ground-fault protection. Equipment
ground-fault protection on grounded neutral
85
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Electronic Trip Molded Case Circuit Breakers
Glossary
systems provided by components internal to
the circuit breaker.
interchangeable trip unit. A trip unit which can
be interchanged by a user among circuit
breaker frames of the same design.
interrupting rating. The highest current at rated
voltage available at the incoming terminals of
the circuit breaker. When the circuit breaker
can be used at more than one voltage, the
interrupting rating will be shown on the circuit
breaker for each voltage level. The
interrupting rating of a circuit breaker must be
equal to or greater than the available shortcircuit current at the point at which the circuit
breaker is applied to the system.
inverse time. A qualifying term indicating there is
purposely introduced a delay in the tripping
action of the circuit breaker, which delay
decreases as the magnitude of the current
increases.
I2t. See let-through.
I2t IN. An inverse time delay characteristic.
I2t OUT. A constant time delay characteristic.
let-through (I2t). An expression related to energy
(measured in ampere-squared seconds)
which passes through an overcurrent
protective device during an interruption.
LI (dual trip device). A combination of
adjustable trip functions including long-time
ampere rating, long-time delay, and
instantaneous pickup.
LIG (dual with ground trip device). A
combination of adjustable trip functions
including long-time ampere rating, long-time
delay, instantaneous pickup, ground-fault
pickup and ground-fault delay.
local current meter. See ammeter/trip indicator.
long-time ampere rating. An adjustment which,
in combination with the installed rating plug,
establishes the continuous current rating of
an electronic trip circuit breaker.
long-time delay. The length of time the circuit
breaker will carry a sustained overload
(greater than the long-time pickup) before
initiating a trip signal.
long-time pickup. The current level at which the
circuit breaker long-time delay function
begins timing.
LS (LSI). A combination of adjustable trip
functions including long-time ampere rating,
long-time delay, short-time pickup, short-time
delay and a defeatable instantaneous pickup.
LSG (LSIG). A combination of adjustable trip
functions including long-time ampere rating,
long-time delay, short-time pickup, short-time
delay, defeatable instantaneous pickup,
ground-fault pickup and ground-fault delay.
molded case circuit breaker. A circuit breaker
which is assembled as an integral unit in a
supportive and enclosed housing of insulating
material.
molded case switch. A device designed to open
and close a circuit by non-automatic means
that is not intended to provide overcurrent
protection.
motor operator or electrical operator. An
electrical controlling device which is used to
open and close a circuit breaker or switch and
reset a circuit breaker.
neutral current transformer. A current
transformer which encircles the neutral
conductor; required for use with circuit
breakers with integral ground-fault protection,
when applied on a grounded system.
operating mechanism. An internal mechanical
system which opens and closes the circuit
breaker contacts.
overcurrent. Any current in excess of the rated
continuous current of electrical equipment or
the ampacity of a conductor.
overload delay. The length of time the circuit
breaker will carry a sustained low-level
overcurrent before initiating a trip signal.
peak current sensing. A method of determining
the current flowing in a circuit by measuring
the peak amplitude of the current wave each
half cycle, then calculating the effective rms.
(The effective rms value is assumed to equal
0.707 times the measured peak. This results
in accurate rms values on pure sinusoidal
waveforms only.)
peak let-through. The maximum peak current in
a circuit during an overcurrent condition.
push-to-trip button. A button for manually
tripping the circuit breaker.
rating plug. A component which plugs into the
trip unit, establishing the ampere rating of the
circuit breaker.
residual sensing. A means of checking for
current imbalance by using a current sensor
across each current-carrying conductor to
check the magnitude of current flowing in
each conductor, then summing all current
sensors to check for a current imbalance.
restraint interface module (RIM). A component
which allows zone-selective interlocking
communication between Square D fullfunction electronic trip systems, add-on
ground-fault modules and zero-sequence
ground-fault relays.
RIM. Abbreviation for restraint interface module.
rms. Abbreviation for root-mean-square.
rms current sensing. A method of determining
the true rms current of sinusoidal and nonsinusoidal waveforms by sampling the current
86
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Electronic Trip Molded Case Circuit Breakers
Glossary
waveform a number of times per cycle, then
calculating the true rms value. (Square D
circuit breakers sample 33 times per cycle.)
sensor. Current sensing element within a circuit
breaker frame. The sensor has a current
rating less than or equal to the frame size and
provides the sensing function for a specific
group of current ratings within the frame size.
short-circuit delay. The length of time the circuit
breaker will carry a short circuit (current
greater than the short-circuit pickup) before
initiating a trip signal.
short-circuit pickup. The current level at which
the circuit breaker short-circuit delay function
begins timing.
short-time delay. The length of time the circuit
breaker will carry a short circuit (current
greater than the short-time pickup) before
initiating a trip signal.
short-time pickup. The current level at which
the circuit breaker short-time delay function
begins timing.
shunt trip. An accessory which trips the circuit
breaker from a remote location using an
external voltage source.
STD. See short-time delay.
terminal block. The connections for control
wiring.
thermal-magnetic circuit breaker. A general
purpose term for circuit breakers that use
bimetals and electromagnetic assemblies to
provide both overload and short circuit
protection.
trip indicator. A module that mounts directly to
the circuit breaker trip unit that displays
whether the circuit breaker tripped due to an
overload, a short-circuit or a ground-fault
condition.
trip indicator reset. A button on the trip indicator
module used to reset the trip indicator.
trip system. A system which consists of a
MICROLOGIC® trip unit, current
transformers, and trip coil.
trip unit. A programmable microprocessor-based
device which measures and times current
flowing through the circuit breaker and
initiates a trip signal when appropriate.
UL®. Underwriters Laboratories® Inc.
undervoltage trip (UVR). An accessory which
trips the circuit breaker automatically when
the monitored circuit voltage falls below a
predetermined percentage of its specified
value.
UVR. Abbreviation for undervoltage trip release.
withstand rating. The level of rms symmetrical
current that a circuit breaker can carry with
the contacts in a closed position for a stated
period of time (usually described as the
number of cycles).
zero-sequence sensing. A means of sensing
the current flowing on a circuit by using one
current sensor surrounding all currentcarrying conductors, then checking for current
imbalance in the currents flowing in all
directions.
zone-selective interlocking (ZSI). A
communication capability between electronic
trip systems and ground-fault relays which
permits a short circuit or ground fault to be
isolated and cleared by the nearest upstream
device with no intentional time delay.
ZSI. Abbreviation for zone-selective interlocking.
87
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Electronic Trip Molded Case Circuit Breakers
Glossary
88
© 1995–2002 Schneider Electric All Rights Reserved
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06/02
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Electronic Trip Molded Case Circuit Breakers
Index of Catalog Numbers
INDEX OF CATALOG NUMBERS
Numerics
690UVDTI ......................................................... 36
690UVTD .......................................................... 36
A
AL1200NE6 ...................................................... 37
AL2500PA ..................................................31, 37
AL600LI35 ........................................................ 37
AL600LI5 .......................................................... 37
AL600LI7 .......................................................... 37
AL800MA7 ........................................................ 37
AL900MA .......................................................... 37
ARP040 ............................................... 24, 26, 38
ARP050 ..................................24, 26, 28, 30, 38
ARP056 ......................................................26, 38
ARP058 ......................................................30, 38
ARP0583 .......................................................... 28
ARP060 ............................................... 24, 26, 38
ARP063 ......................................................26, 38
ARP067 ............................................... 28, 30, 38
ARP070 ............................................... 24, 26, 38
ARP075 ..................................24, 26, 28, 30, 38
ARP080 ............................................... 24, 26, 38
ARP083 ........................................ 24, 28, 30, 38
ARP088 ........................................ 24, 26, 30, 38
ARP090 ........................................ 24, 26, 30, 38
ARP100 ..................................24, 26, 28, 30, 38
C
CBTMB ............................................................ 42
CIM3F .............................................................. 40
CU1000MA ....................................................... 37
CU1200NE6 ...................................................... 37
CU600LI35 ....................................................... 37
CU600LI5 ......................................................... 37
CU600LI7 ......................................................... 37
CVC1200NE5 .................................................... 37
CVC1200NE7 .................................................... 37
CVC600LI5 ....................................................... 37
CVC600MA5 ..................................................... 37
L
LC11021 ........................................................... 33
LE(L)36100LI .................................................... 24
LE(L)36100LIA .................................................. 24
LE(L)36100LIG .................................................. 24
LE(L)36100LS ................................................... 24
LE(L)36100LSA ................................................. 24
LE(L)36100LSG ................................................. 24
LE(L)36125LI .................................................... 24
LE(L)36125LIA .................................................. 24
LE(L)36125LIG .................................................. 24
LE(L)36125LS ................................................... 24
LE(L)36125LSA ................................................. 24
LE(L)36125LSG ................................................. 24
LE(L)36150LI .................................................... 24
LE(L)36150LIA .................................................. 24
LE(L)36150LIG .................................................. 24
LE(L)36150LS ................................................... 24
LE(L)36150LSA ................................................. 24
LE(L)36150LSG ................................................. 24
LE(L)36175LI .................................................... 24
LE(L)36175LIA .................................................. 24
LE(L)36175LIG .................................................. 24
LE(L)36175LS ................................................... 24
LE(L)36175LSA ................................................. 24
LE(L)36175LSG ................................................. 24
LE(L)36200LI .................................................... 24
LE(L)36200LIA .................................................. 24
LE(L)36200LIG .................................................. 24
LE(L)36200LS ................................................... 24
LE(L)36200LSA ................................................. 24
LE(L)36200LSG ................................................. 24
LE(L)36225LI .................................................... 24
LE(L)36225LIA .................................................. 24
LE(L)36225LIG .................................................. 24
LE(L)36225LS ................................................... 24
LE(L)36225LSA ................................................. 24
LE(L)36225LSG ................................................. 24
LE(L)36250LI .................................................... 24
LE(L)36250LIA .................................................. 24
LE(L)36250LIG .................................................. 24
LE(L)36250LS ................................................... 24
LE(L)36250LSA ................................................. 24
LE(L)36250LSG ................................................. 24
LE(L)36300LI .................................................... 24
LE(L)36300LIA .................................................. 24
LE(L)36300LIG .................................................. 24
LE(L)36300LS ................................................... 24
LE(L)36300LSA ................................................. 24
LE(L)36300LSG ................................................. 24
LE(L)36350LI .................................................... 24
LE(L)36350LIA .................................................. 24
LE(L)36350LIG .................................................. 24
LE(L)36350LS ................................................... 24
LE(L)36350LSA ................................................. 24
LE(L)36350LSG ................................................. 24
LE(L)36400LI .................................................... 24
LE(L)36400LIA .................................................. 24
LE(L)36400LIG .................................................. 24
LE(L)36400LS ................................................... 24
LE(L)36400LSA ................................................. 24
LE(L)36400LSG ................................................. 24
LE(L)36450LI .................................................... 24
LE(L)36450LIA .................................................. 24
LE(L)36450LIG .................................................. 24
LE(L)36450LS ................................................... 24
LE(L)36450LSA ................................................. 24
LE(L)36450LSG ................................................. 24
89
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Electronic Trip Molded Case Circuit Breakers
Index of Catalog Numbers
LE(L)36500LI ..................................................... 24
LE(L)36500LIA .................................................. 24
LE(L)36500LIG .................................................. 24
LE(L)36500LS ................................................... 24
LE(L)36500LSA ................................................. 24
LE(L)36500LSG ................................................. 24
LE(L)36600LI ..................................................... 24
LE(L)36600LIA .................................................. 24
LE(L)36600LIG .................................................. 24
LE(L)36600LS ................................................... 24
LE(L)36600LSA ................................................. 24
LE(L)36600LSG ................................................. 24
LE2CT2 ............................................................ 41
LE4CT2 ............................................................ 41
LE6CT2 ............................................................ 41
LEL36600LSG ................................................... 33
LX(I)(L)36100 .................................................... 24
LX(I)(L)36100G .................................................. 24
LX(I)(L)36125 .................................................... 24
LX(I)(L)36125G .................................................. 24
LX(I)(L)36150 .................................................... 24
LX(I)(L)36150G .................................................. 24
LX(I)(L)36175 .................................................... 24
LX(I)(L)36175G .................................................. 24
LX(I)(L)36200 .................................................... 24
LX(I)(L)36200G .................................................. 24
LX(I)(L)36225 .................................................... 24
LX(I)(L)36225G .................................................. 24
LX(I)(L)36250 .................................................... 24
LX(I)(L)36250G .................................................. 24
LX(I)(L)36300 .................................................... 24
LX(I)(L)36300G .................................................. 24
LX(I)(L)36350 .................................................... 24
LX(I)(L)36350G .................................................. 24
LX(I)(L)36400 .................................................... 24
LX(I)(L)36400G .................................................. 24
LX(I)(L)36450 .................................................... 24
LX(I)(L)36450G .................................................. 24
LX(I)(L)36500 .................................................... 24
LX(I)(L)36500G .................................................. 24
LX(I)(L)36600 .................................................... 24
LX(I)(L)36600G .................................................. 24
M
ME(L)36100LI .................................................... 26
ME(L)36100LIA ................................................. 26
ME(L)36100LIG ................................................. 26
ME(L)36100LS .................................................. 26
ME(L)36100LSA ................................................ 26
ME(L)36100LSG ................................................ 26
ME(L)36125LI .................................................... 26
ME(L)36125LIA ................................................. 26
ME(L)36125LIG ................................................. 26
ME(L)36125LS .................................................. 26
ME(L)36125LSA ................................................ 26
ME(L)36125LSG ................................................ 26
ME(L)36150LI .................................................... 26
ME(L)36150LIA ................................................. 26
ME(L)36150LIG ................................................. 26
ME(L)36150LS .................................................. 26
ME(L)36150LSA ................................................ 26
ME(L)36150LSG ................................................ 26
ME(L)36175LI .................................................... 26
ME(L)36175LIA .................................................. 26
ME(L)36175LIG ................................................. 26
ME(L)36175LS .................................................. 26
ME(L)36175LSA ................................................ 26
ME(L)36175LSG ................................................ 26
ME(L)36200LI .................................................... 26
ME(L)36200LIA .................................................. 26
ME(L)36200LIG ................................................. 26
ME(L)36200LS .................................................. 26
ME(L)36200LSA ................................................ 26
ME(L)36200LSG ................................................ 26
ME(L)36225LI .................................................... 26
ME(L)36225LIA .................................................. 26
ME(L)36225LIG ................................................. 26
ME(L)36225LS .................................................. 26
ME(L)36225LSA ................................................ 26
ME(L)36225LSG ................................................ 26
ME(L)36250LI .................................................... 26
ME(L)36250LIA .................................................. 26
ME(L)36250LIG ................................................. 26
ME(L)36250LS .................................................. 26
ME(L)36250LSA ................................................ 26
ME(L)36250LSG ................................................ 26
ME(L)36300LI .................................................... 26
ME(L)36300LIA .................................................. 26
ME(L)36300LIG ................................................. 26
ME(L)36300LS .................................................. 26
ME(L)36300LSA ................................................ 26
ME(L)36300LSG ................................................ 26
ME(L)36350LI .................................................... 26
ME(L)36350LIA .................................................. 26
ME(L)36350LIG ................................................. 26
ME(L)36350LS .................................................. 26
ME(L)36350LSA ................................................ 26
ME(L)36350LSG ................................................ 26
ME(L)36400LI .................................................... 26
ME(L)36400LIA .................................................. 26
ME(L)36400LIG ................................................. 26
ME(L)36400LS .................................................. 26
ME(L)36400LSA ................................................ 26
ME(L)36400LSG ................................................ 26
ME(L)36450LI .................................................... 26
ME(L)36450LIA .................................................. 26
ME(L)36450LIG ................................................. 26
ME(L)36450LS .................................................. 26
ME(L)36450LSA ................................................ 26
ME(L)36450LSG ................................................ 26
ME(L)36500LI .................................................... 26
ME(L)36500LIA .................................................. 26
ME(L)36500LIG ................................................. 26
ME(L)36500LS .................................................. 26
ME(L)36500LSA ................................................ 26
ME(L)36500LSG ................................................ 26
ME(L)36600LI .................................................... 26
ME(L)36600LIA .................................................. 26
ME(L)36600LIG ................................................. 26
ME(L)36600LS .................................................. 26
ME(L)36600LSA ................................................ 26
ME(L)36600LSG ................................................ 26
ME(L)36700LI .................................................... 26
ME(L)36700LIA .................................................. 26
ME(L)36700LIG ................................................. 26
ME(L)36700LS .................................................. 26
90
© 1995–2002 Schneider Electric All Rights Reserved
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Electronic Trip Molded Case Circuit Breakers
Index of Catalog Numbers
ME(L)36700LSA ................................................ 26
ME(L)36700LSG ................................................ 26
ME(L)36800LI ................................................... 26
ME(L)36800LIA ................................................. 26
ME(L)36800LIG ................................................. 26
ME(L)36800LS .................................................. 26
ME(L)36800LSA ................................................ 26
ME(L)36800LSG ................................................ 26
ME25CT2 ......................................................... 41
ME4CT2 ........................................................... 41
ME8CT2 ........................................................... 41
MX(L)36100 ...................................................... 26
MX(L)36100G .................................................... 26
MX(L)36125 ...................................................... 26
MX(L)36125G .................................................... 26
MX(L)36150 ...................................................... 26
MX(L)36150G .................................................... 26
MX(L)36175 ...................................................... 26
MX(L)36175G .................................................... 26
MX(L)36200 ...................................................... 26
MX(L)36200G .................................................... 26
MX(L)36225 ...................................................... 26
MX(L)36225G .................................................... 26
MX(L)36250 ...................................................... 26
MX(L)36250G .................................................... 26
MX(L)36300 ...................................................... 26
MX(L)36300G .................................................... 26
MX(L)36350 ...................................................... 26
MX(L)36350G .................................................... 26
MX(L)36400 ...................................................... 26
MX(L)36400G .................................................... 26
MX(L)36450 ...................................................... 26
MX(L)36450G .................................................... 26
MX(L)36500 ...................................................... 26
MX(L)36500G .................................................... 26
MX(L)36600 ...................................................... 26
MX(L)36600G .................................................... 26
MX(L)36700 ...................................................... 26
MX(L)36700G .................................................... 26
MX(L)36800 ...................................................... 26
MX(L)36800G .................................................... 26
MXL36800 ........................................................ 33
MXL368001021 ................................................. 33
N
NE(L)361000LI .................................................. 28
NE(L)361000LIA ................................................ 28
NE(L)361000LIG ............................................... 28
NE(L)361000LS ................................................. 28
NE(L)361000LSA ............................................... 28
NE(L)361000LSG .............................................. 28
NE(L)361200LI .................................................. 28
NE(L)361200LIA ................................................ 28
NE(L)361200LIG ............................................... 28
NE(L)361200LS ................................................. 28
NE(L)361200LSA ............................................... 28
NE(L)361200LSG .............................................. 28
NE(L)36600LI .................................................... 28
NE(L)36600LIA .................................................. 28
NE(L)36600LIG ................................................. 28
NE(L)36600LS .................................................. 28
NE(L)36600LSA ................................................ 28
NE(L)36600LSG ................................................ 28
NE(L)36700LI .................................................... 28
NE(L)36700LIA .................................................. 28
NE(L)36700LIG ................................................. 28
NE(L)36700LS ................................................... 28
NE(L)36700LSA ................................................ 28
NE(L)36700LSG ................................................ 28
NE(L)36800LI .................................................... 28
NE(L)36800LIA .................................................. 28
NE(L)36800LIG ................................................. 28
NE(L)36800LS ................................................... 28
NE(L)36800LSA ................................................ 28
NE(L)36800LSG ................................................ 28
NE(L)36900LI .................................................... 28
NE(L)36900LIA .................................................. 28
NE(L)36900LIG ................................................. 28
NE(L)36900LS ................................................... 28
NE(L)36900LSA ................................................ 28
NE(L)36900LSG ................................................ 28
NE12CT2 .......................................................... 41
NX(L)361000 ..................................................... 28
NX(L)361000G .................................................. 28
NX(L)361200 ..................................................... 28
NX(L)361200G .................................................. 28
NX(L)36600 ...................................................... 28
NX(L)36600G .................................................... 28
NX(L)36700 ...................................................... 28
NX(L)36700G .................................................... 28
NX(L)36800 ...................................................... 28
NX(L)36800G .................................................... 28
NX(L)36900 ...................................................... 28
NX(L)36900G .................................................... 28
P
PAKK ............................................................... 41
PAM02 ............................................................. 40
PDC12MA4 ....................................................... 37
PDC6MA20 ....................................................... 37
PE12CT2 .......................................................... 41
PE16CT2 .......................................................... 41
PE20CT2 .......................................................... 41
PE25CT2 .......................................................... 41
PEF361000LI .................................................... 30
PEF361000LIA .................................................. 30
PEF361000LIG .................................................. 30
PEF361000LS ................................................... 30
PEF361000LSA ................................................. 30
PEF361000LSG ................................................ 30
PEF361200LI .................................................... 30
PEF361200LIA .................................................. 30
PEF361200LIG .................................................. 30
PEF361200LS ................................................... 30
PEF361200LSA ................................................. 30
PEF361200LSG ................................................ 30
PEF361400LI .................................................... 30
PEF361400LIA .................................................. 30
PEF361400LIG .................................................. 30
PEF361400LS ................................................... 30
PEF361400LSA ................................................. 30
PEF361400LSG ................................................ 30
PEF361600LI .................................................... 30
PEF361600LIA .................................................. 30
91
06/02
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Index of Catalog Numbers
PEF361600LIG .................................................. 30
PEF361600LS ................................................... 30
PEF361600LSA ................................................. 30
PEF361600LSG ................................................. 30
PEF361800LI .................................................... 30
PEF361800LIA .................................................. 30
PEF361800LIG .................................................. 30
PEF361800LS ................................................... 30
PEF361800LSA ................................................. 30
PEF361800LSG ................................................. 30
PEF362000LI .................................................... 30
PEF362000LIA .................................................. 30
PEF362000LIG .................................................. 30
PEF362000LS ................................................... 30
PEF362000LSA ................................................. 30
PEF362000LSG ................................................. 30
PEF362500LI .................................................... 30
PEF362500LIA .................................................. 30
PEF362500LIG .................................................. 30
PEF362500LS ................................................... 30
PEF362500LSA ................................................. 30
PEF362500LSG ................................................. 30
PEF36600LI ...................................................... 30
PEF36600LIA .................................................... 30
PEF36600LIG .................................................... 30
PEF36600LS ..................................................... 30
PEF36600LSA ................................................... 30
PEF36600LSG .................................................. 30
PEF36700LI ...................................................... 30
PEF36700LIA .................................................... 30
PEF36700LIG .................................................... 30
PEF36700LS ..................................................... 30
PEF36700LSA ................................................... 30
PEF36700LSG .................................................. 30
PEF36800LI ...................................................... 30
PEF36800LIA .................................................... 30
PEF36800LIG .................................................... 30
PEF36800LS ..................................................... 30
PEF36800LSA ................................................... 30
PEF36800LSG .................................................. 30
PEF36900LI ...................................................... 30
PEF36900LIA .................................................... 30
PEF36900LIG .................................................... 30
PEF36900LS ..................................................... 30
PEF36900LSA ................................................... 30
PEF36900LSG .................................................. 30
PFX361000 ....................................................... 30
PFX361000G ..................................................... 30
PFX361200 ....................................................... 30
PFX361200G ..................................................... 30
PFX361400 ....................................................... 30
PFX361400G ..................................................... 30
PFX361600 ....................................................... 30
PFX361600G ..................................................... 30
PFX361800 ....................................................... 30
PFX361800G ..................................................... 30
PFX362000 ....................................................... 30
PFX362000G ..................................................... 30
PFX362500 ....................................................... 30
PFX362500G ..................................................... 30
PFX36600 ......................................................... 30
PFX36600G ...................................................... 30
PFX36700 ......................................................... 30
PFX36700G ...................................................... 30
PFX36800 ......................................................... 30
PFX36800G ...................................................... 30
PFX36900 ......................................................... 30
PFX36900G ...................................................... 30
PJC7201 ........................................................... 38
R
RIM32 ............................................................... 42
S
S48890 ............................................................. 42
S48895 ............................................................. 42
T
TUSEAL ........................................................... 42
U
UTS3 ................................................................ 42
V
VC1200NE5 ...................................................... 37
VC1200NE7 ...................................................... 37
VC2000PA5 ............................................... 31, 37
VC2500PA7 ............................................... 31, 37
VC600LI3 .......................................................... 37
VC600LI5 .......................................................... 37
VC600LI7 .......................................................... 37
VC600MA5 ........................................................ 37
VC800MA7 ........................................................ 37
92
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Index
INDEX
Numerics
100% rating 10
A
accessories
alarm switch 36
ammeter/trip indicator 39
auxiliary switch 36
communications adapter 40
electrical operators 40
for LE/LX/LXI circuit breakers 25
for ME/MX circuit breakers 27
for NE/NX circuit breakers 29
handle
extensions for 41
mechanical interlocking of 41
padlocks for 41
lug kits (PE/PX circuit breakers only) 31
neutral current transformers 41
rating plugs 38
restraint interface module 42
RIM. See restraint interface module
shunt trip 34
terminations 37
trip indicator 39
trip unit seals 42
undervoltage trip 35, 36
universal test set 42
ALAM and ALAMP ammeter/trip indicators 39
alarm switch 36
ALTI and ALTIP trip indicators 39
ambient temperature rating 10
ammeter/trip indicator 39
ampere rating 9
auxiliary switch 36
B
bus bar notching for neutral current transformer 29
C
catalog numbers
for LE/LX/LXI circuit breakers 24
for ME/MX circuit breakers 26
for NE/NX circuit breakers 28
for PE/PX circuit breakers 30
circuit breakers
accessories for 33
catalog numbers. See catalog numbers
connections for 12
control wiring. See control wiring
dimensions. See dimensions
frame sizes of 9
full-function trip system for 15
ground-fault detection 17
internal operating mechanism for 11
interrupting ratings
for LE/LX/LXI circuit breakers 24
for ME/MX circuit breakers 26
for NE/NX circuit breakers 28
for PE/PX circuit breakers 30
maintenance and testing for 14
mounting of 12
push-to-trip button for 11
ratings. See ratings
selection of 23
specifications for 9
standard-function trip system for 15
standards for 8
terminal pads for (PE/PX circuit breakers only) 31
terminations for 37
testing requirements for 13
trip characteristics. See trip unit
trip curves for 53
tripping system for 11
communications adapter 40
compression lugs 38
connections
for I-LINE circuit breakers 12
for unit-mount circuit breakers 12
connectors, power distribution 38
continuous current ratings 25
control wiring
for LE/LX/LXI circuit breakers 25
for ME/MX circuit breakers 27
for NE/NX circuit breakers 29
for PE/PX circuit breakers 32
CT. See neutral current transformers
D
dimensions
for LE/LX/LXI circuit breakers 43
for LE/LX/LXI neutral current transformers 43
for ME/MX circuit breakers 44
for ME/MX neutral current transformers 44
for NE/NX circuit breakers 45
for NE/NX neutral current transformers
bus bar notching 45
for PE/PX circuit breakers 47
for PE/PX circuit breakers with terminal pads
1800-2500 A PE circuit breakers 49
2500 A PX circuit breakers 49
600-1600 A PE circuit breakers 48
600-2000 A PX circuit breakers 48
for PE/PX neutral current transformers 47
for PE/PX terminal pad bus
1800-2500 A PE circuit breakers 50
1800–2500 A PE circuit breakers 50
2500 A PX circuit breakers 50
E
electric joint compound 38
electrical operators 40
electronic trip unit 15
See also trip unit
93
06/02
© 1995–2001 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Index
F
frame size 9
Also see sensor size
frequency rating 9
full-function trip system 15
See also full-function trip unit
full-function trip unit
ground-fault trip functions for 21
instantaneous trip 21
long-time trip function 20
short-time trip function 21
trip curve 20
trip curves 20
trip functions 20
functions description for
full-function trip unit 20
standard-function trip unit 19
G
ground-fault
alarm
description of 17
for full-function trip unit 22
detection of 17
full-function trip unit 21
protection
description of 17
full-function trip unit 21
standard-function trip unit for 19
zero-sequence, to approximate 22
standard-function trip unit 19
test feature, description of 17
trip functions
full-function trip unit 21
standard-function trip unit 19
continuous current ratings for 25
control wiring 25
dimensions for
circuit breaker 43
neutral current transformer 43
interrupting ratings 24
lug information for 24
withstand ratings 10
long-time trip function
full-function trip unit 20
standard-function trip unit 18
lug information
compression lugs 38
control wire terminations 38
copper mechanical lugs 37
LE/LX/LXI circuit breakers 24
ME/MX circuit breakers 27
NE/NX circuit breakers 29
PE/PX circuit breakers 31
power distribution connectors 38
lug kits for PE/PX circuit breakers 31
M
maintenance and testing 14
ME/MX circuit breakers
accessories for 27
catalog numbers for 26
continuous current ratings 27
control wiring for 27
dimensions for 44
interrupting ratings 26
lug information 27
withstand ratings for 10
memory feature, trip unit 17
mounting 12
mounting kit. See terminal pads
H
N
handle
extensions for 41
mechanical interlocking of 41
padlocks for 41
J
NE/NX circuit breakers
accessories 29
catalog numbers 28, 30
continuous current ratings 28
control wiring 29
dimensions
circuit breaker 45
neutral current transformer 45
interrupting ratings 28
lug information 29
withstand rating 10
neutral CT. See neutral current transformers
neutral current transformers 41
bus bar notching 45
catalog numbers 41
dimensions
NE/NX circuit breakers 45
PE/PX circuit breakers 47
joint compound. See electric joint compound
P
L
PAM02 electrical operator 40
PE/PX circuit breakers
accessories 32
catalog numbers 30
continuous current ratings for 31
I
instantaneous trip function
full-function trip unit 21
standard-function trip unit 19
integral ground-fault detection 17
internal operating mechanism 11
interrupting ratings
LE/LX/LXI circuit breakers 24
ME/MX circuit breakers 26
NE/NX circuit breakers 28
PE/PX circuit breakers 30
LE/LX/LXI circuit breakers
accessories for 25
catalog numbers for 24
94
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Index
control wiring for 32
dimensions
circuit breaker with terminal pads 48, 49
neutral current transformer 47
terminal pad bus 50
interrupting ratings 30
lug information 31
terminations 31
withstand rating 10
POWERLOGIC system 40
R
rating plugs 9, 38
ratings, frequency 9
ratings, interrupting 10
for LE/LX/LXI circuit breakers 24
for ME/MX circuit breakers 26
for NE/NX circuit breakers 28
for PE/PX circuit breakers 30
requirements
EUSRC for handle padlocks 41
for circuit breaker testing 13
for restraint interface module (RIM) 42
for series 3B trip unit testing 42
maintenance and testing 14
PAM02 electrical operator 40
power for ground-fault push-to-test 17
terminal pad usage 31, 37
terminal pads 12
terminations 31
wire temperature rating 10, 25, 27, 28, 31
restraint interface modules (RIM) 42
RIM See restraint interface modules
RMS sensing 15
S
seals, trip unit 42
sensor size 9
short-time trip function
full-function trip unit 21
standard-function trip unit 19
shunt trip 34
specifications. See circuit breakers
standard-function trip system 15
standard-function trip unit 19
ground-fault trip function 19
instantaneous trip function 19
long-time trip function 18
short-time trip function 19
standards. See circuit breaker
switch, alarm 36
switch, auxiliary 36
T
temperature rating 10
See also ambient temperature rating
temperature rise 13
terminal pads
dimensions with circuit breaker
1800–2500 A PE circuit breakers 49
2500 A PX circuit breakers 49
600-1600 A PE circuit breakers
600–1600 A PE circuit breakers 48
600–2000 A PX circuit breakers 48
usage 31
terminations
for I-LINE circuit breakers 38
CBA jaw configuration 38
electric joint compound 38
LE/LX/LXI circuit breakers 24
ME/MX circuit breakers 27
NE/NX circuit breakers 29
unit-mount construction 12
testing requirements 13
high available fault current 14
200% overload calibration 14
250% overload calibration 14
dielectric withstand 14
short-circuit test 14
limited available fault current
135% overload calibration 13
200% overload calibration 13
calibration re-test 13
dielectric 13
endurance 13
overload 13
short circuit 13
temperature rise 13
trip out 13
trip characteristics 17
trip curves 53
full-function trip unit 20
standard-function trip unit 19
trip indicator
ALAM and ALAMP 39
ALTI and ALTIP 39
trip unit 19, 20
ammeter/trip indicator 16
full-function trip unit 20
integral ground-fault detection 17
memory feature 17
RMS sensing 15
seals 42
setting functions for 15
settings
to approx. thermal-magnetic 22
to approx. zero-sequence ground-fault 22
standard-function trip unit 18
trip characteristics 17
tripping system 11
U
undervoltage trip 35, 36
adjustable delay 36
universal test set 42
W
wiring diagram, PAM02 40
withstand ratings 10
Z
zero-sequence ground-fault protection 22
95
06/02
© 1995–2001 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Electronic Trip Molded Case Circuit Breakers
Index
96
© 1995–2002 Schneider Electric All Rights Reserved
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
06/02
www.barr-thorp.com
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com
Square D Company
PO Box 3069
3700 Sixth St SW
Cedar Rapids, IA 52406-3069 USA
1-888-SquareD (1-888-778-2733)
www.SquareD.com
Square D and
are registered trademarks of Square D Company or related companies. All
other trademarks are the intellectual property of their respective companies.
Catalog No. 0602CT9201R1/02 June 2002 Replaces 0602CT9201R11/97
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123
www.barr-thorp.com