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e243698
Miniature Circuit Breakers - Type JTEC
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Supplementary
MINIATURE CIRCUIT BREAKERS - TYPE JTECUL
CONTENTS
Introduction ...................... 2
Part Number Listing .......... 3
Technical Specifications ... 4-5
CONTENTS
Trip Curves ....................... 6
Introduction ....................................................... 2
Application Guidelines ........ 7
Part Number Listing .............................................. 3
Dimensions ....................... 8
Miniature Circuit Breakers – Type JTECUL
Technical Specifications
................................ 4-5
Trip Curves ....................................................... 6
Application Guidelines & Dimension........................7
Cross Reference...................................................... 8
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INTRODUCTION
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JTEC MCB’s are premium thermal-magnetic MCB’s approved as
supplementary protectors to UL1077 (CSA 235), and UL listed as manual motor
starters to UL508.
Anatomy of a High Performance MCB
1
2
They are available in 1, 2, 3P versions plus neutrals and offer industry standard
dimensions and trip characteristics.
3
Features & Benefits.
4
12
• Certified as manual motor controllers & marked “Suitable
for use as motor disconnect”.
• Current/energy limiting performance minimizes damage to
wiring and components.
• Ratings up to 10KA and 600Vac
• Fit standard 35mm DIN rail. Dual fixing mechanism allows
MCB to be released from top or bottom.
• Solenoid ‘hammer-trip’ mechanism and arc-control chutes for
reliable fault interruption.
• Wide range of field installable options.
• Optional busbar system for time and labour saving installation.
Busbar tie points are separate from box terminals and may be
used as splitter connections if busbar not used.
• ‘Trip-free’ toggle mechanism with clear on/off status.
• JTEC MCB’s can be reverse fed.
11
5
10
9
7
6
8
1 - Box Terminal
2 - Busbar Aperture
3 - Hammer action Solenoid
4 - Actuator handle
5 - Moving contact
6 - Busbar aperture
7 - Box terminal
8 - Din clip
9 - Thermal element
10- Arc runner
11- Trip bar
12- Arc chamber
APPLICATIONS FOR SUPPLEMENTARY MCB’S
JTEC MCB’s are used wherever closer overcurrent protection of components is required than the branch circuit device is capable of
providing. Supplementary devices are typically used on the load side of the branch circuit device to ‘Supplement’ the branch circuit
device’s capabilities and are available in a wide range of current ratings and trip characteristics that allow them to be matched to
the overcurrent requirements of individual control components.
JTEC MCB’s are also suitable as manual motor controllers and can be used for direct across-the-line control of AC motors or group
protection of AC motors to UL 508. They are marked “Suitable for use as motor disconnect” to meet emerging inspection
requirements.
JTEC MCB’s are current and energy limiting. They can reduce the heating and magnetic effects of short circuits to greatly reduced
levels. Their ‘trip-free’ mechanism prevents reclosing the MCB onto a faulted circuit and provides a clear indication of a tripped
unit.
Their compact dimensions, ease of mounting and excellent performance make them an ideal overcurrent device for the protection
of small motors, communication and computer equipment, appliances, general control circuits, solenoids and coils, lighting circuits,
and resistive loads.
For Branch Rated Circuit Breakers, please request bulletin JTEC489
Miniature Circuit Breakers – Type JTECUL by
PART NUMBER LISTING
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Part Numbers
Trip
Characteristics
B
Fast Acting. Instantaneous trip response
of 3 - 5X rated
current (In)
Use for sensitive
equipment and purely
resistive loads.
C
Normal acting.
Instantaneous trip
response of 5 - 10x
rated current (In)
Use for control
circuits and mixed
loads
D
Slow Acting.
Instantaneous trip
response of 10 - 20x
rated current (In)
Use for motor,
transformer and
solenoid applications.
Continuous
Amp Rating (A)
Single Pole
0.5
1
2
3
4
6
8
10
13
16
20
25
32
40
50
63
JTECUL1B0.5
JTECUL1B01
JTECUL1B02
JTECUL1B03
JTECUL1B04
JTECUL1B06
JTECUL1B08
JTECUL1B10
JTECUL1B13
JTECUL1B16
JTECUL1B20
JTECUL1B25
JTECUL1B32
JTECUL1B40
JTECUL1B50
JTECUL1B63
JTECUL2B0.5
JTECUL2B01
JTECUL2B02
JTECUL2B03
JTECUL2B04
JTECUL2B06
JTECUL2B08
JTECUL2B10
JTECUL2B13
JTECUL2B16
JTECUL2B20
JTECUL2B25
JTECUL2B32
JTECUL2B40
JTECUL2B50
JTECUL2B63
JTECUL3B0.5
JTECUL3B01
JTECUL3B02
JTECUL3B03
JTECUL3B04
JTECUL3B06
JTECUL3B08
JTECUL3B10
JTECUL3B13
JTECUL3B16
JTECUL3B20
JTECUL3B25
JTECUL3B32
JTECUL3B40
JTECUL3B50
JTECUL3B63
0.5
1
1.6
2
3
4
5
6
8
10
13
15
16
20
25
30
32
40
50
63
JTECUL1C0.5
JTECUL1C01
JTECUL1C1.6
JTECUL1C02
JTECUL1C03
JTECUL1C04
JTECUL1C05
JTECUL1C06
JTECUL1C08
JTECUL1C10
JTECUL1C13
JTECUL1C15
JTECUL1C16
JTECUL1C20
JTECUL1C25
JTECUL1C30
JTECUL1C32
JTECUL1C40
JTECUL1C50
JTECUL1C63
JTECUL2C0.5
JTECUL2C01
JTECUL2C1.6
JTECUL2C02
JTECUL2C03
JTECUL2C04
JTECUL2C05
JTECUL2C06
JTECUL2C08
JTECUL2C10
JTECUL2C13
JTECUL2C15
JTECUL2C16
JTECUL2C20
JTECUL2C25
JTECUL2C30
JTECUL2C32
JTECUL2C40
JTECUL2C50
JTECUL2C63
JTECUL3C0.5
JTECUL3C01
JTECUL3C1.6
JTECUL3C02
JTECUL3C03
JTECUL3C04
JTECUL3C05
JTECUL3C06
JTECUL3C08
JTECUL3C10
JTECUL3C13
JTECUL3C15
JTECUL3C16
JTECUL3C20
JTECUL3C25
JTECUL3C30
JTECUL3C32
JTECUL3C40
JTECUL3C50
JTECUL3C63
0.5
1
2
3
4
6
8
10
13
16
20
25
32
40
50
63
JTECUL1D0.5
JTECUL1D01
JTECUL1D02
JTECUL1D03
JTECUL1D04
JTECUL1D06
JTECUL1D08
JTECUL1D10
JTECUL1D13
JTECUL1D16
JTECUL1D20
JTECUL1D25
JTECUL1D32
JTECUL1D40
JTECUL1D50
JTECUL1D63
JTECUL2D0.5
JTECUL2D01
JTECUL2D02
JTECUL2D03
JTECUL2D04
JTECUL2D06
JTECUL2D08
JTECUL2D10
JTECUL2D13
JTECUL2D16
JTECUL2D20
JTECUL2D25
JTECUL2D32
JTECUL2D40
JTECUL2D50
JTECUL2D63
JTECUL3D0.5
JTECUL3D01
JTECUL3D02
JTECUL3D03
JTECUL3D04
JTECUL3D06
JTECUL3D08
JTECUL3D10
JTECUL3D13
JTECUL3D16
JTECUL3D20
JTECUL3D25
JTECUL3D32
JTECUL3D40
JTECUL3D50
JTECUL3D63
Double Pole
part numbering example
JTECUL
JTECUL- Supplementary
Miniature Circuit Breakers – Type JTECUL
No. Poles (1, 2, 3)
3
C
63
Trip Curve (B, C, D)
Amp Rating (0.5 - 63A)
Three Pole
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TECHNICAL SPECIFICATIONS
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Auxilliary contacts
Used for signalling or operating remote devices. Available as 1-NO/NC, 2 NO/NC, 1 NO/NC +
signal, and 1 - NO/NC + signal + test button. Auxilliary contacts have higher switching
capability than signal contacts.
Part #
Part #
JTECULAUX1CO
JTECULAUX2CO
1 changeover contact
2 changeover contacts
JTECULAUXSTCO
JTECULAUXSCO
1 changeover, 1 signal contact
1 changeover, 1 signal contact with test button
Shunt trip
Shunt trips are used to trip breaker from a remote location and are available in a wide range
of popular control voltages.
Part # - AC
JTECULST12AC
Part # - AC
JTECULST24AC
Part # - DC
JTECULST24DC
JTECULST120AC
JTECULST48DC
JTECULST230AC
JTECULST110DC
Neutral module (switched)
This module is used where a non-sensing pole is desired. The neutral is operated in tandem
with the main poles.
Part #
JTECULN2
(for 32-63A)
Safety lockouts
Use this lockout to lock MCB in open or closed position. Hole for padlock or seal is provided.
Available in safety yellow or black.
Part # Yellow
Part # Black
JTECLP1Yellow
JTECLP1Black
Feeder Busbar
Use feeder bus to parallel a large number of breakers - saving wiring and labour costs.
Available for single phase or 3 phase applications in16 or 20 gang models. Busbar may be
cut for reduced number of poles. Can also be used with other devices (fuseholders, etc..)
Single Phase Part #
Description
3 Phase Part #
Description
BBTEC1Pcomb20
1 phase - 20 gang spade style
BBTEC3Pcomb16C
3 phase 16 gang spade type
BBTEC1Ppin16
1 phase - 16 gang pin style
BBTEC3Ppin16
3 phase 16 gang pin type
Miniature Circuit Breakers – Type JTECUL by
TECHNICAL SPECIFICATIONS
e243698
General Specifications
JTECUL
UL/CSA Standards - Supplemental protection
UL1077 (CSA 235)
UL Motor Disconnect standard
UL508
IEC Standards
IEC/EN60 898, DIN43880
Ambient temperature
min/max
-25* to +60* C
Line load connections
Reversible
Mounting position
any plane
Degree of protection
IP20 at front
Mechanical life expectancy
cycles
100,000 on/off cycles
Electrical life expectancy
cycles
6,000 on/off cycles as motor disconnect
Vibration resistance
G/HZ
3G’s (8-50HZ)
Electrical Specifications
Rated current
JTECUL
0.5, 1, 1.6, 2, 3, 4, 5, 6, 8, 10, 13, 15, 16, 20, 25,
30, 32, 40, 50, 63A
Amps
Number of Poles
Rated voltage (Volts)
Rated frequency (AC)
1P, 2P, 3P 1P+N,
AC
277/480V, 347/600V
DC
48 V
Hz
50/60Hz
3P+N
1/2 - 6A 10kA No backup fuse
UL1077/
UL508
277/480Vac
8 - 63A 10kA with backup fuse
Interrupting ratings (rms symm)
347/600Vac
Techna self
tested
48Vdc
Series Rating Backup Fuse
Trip curves (instantaneous trip)
Tightening torque
1/2 - 63A 2kA No backup fuse
1/2 - 63A 5kA with backup fuse
1/2 - 63A 8kA No backup fuse
Current limiting. CSA/UL class J 250A or less
B
3 - 5X current rating
C
5 - 10X current rating
D
10 - 20X rating
Overload response
Wire range (box terminal)
8 - 63A 5kA No backup fuse
1.3X current rating in <1h
AWG12- AWG3 (2.5mm2 - 25mm2)
UL/CSA
Nm
13-17 in/lbs (1.5-2Nm)
Accessory Specifications
Terminal Capacity
JTECUL
AWG
Tightening torque
#20 - #12 copper only
3-4 in/lbs , .33 - .50Nm
Protection degree
IP20 from front
Shunt trip release coil voltages
AC
12, 24, 120, 230
DC
24, 48, 110V
Auxilliary contact ratings
Standard pilot duty
Bus Bar Specifications
Amp ratings
Approvals
BBTEC
End feed
80A
Center feed
130A
UL508
277/480Vac, 10kA rms
Material - Conductor
Copper (E-Cu-F25)
Material - Insulating
ABS UL 94-V0
Miniature Circuit Breakers – Type JTECUL
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TRIP CURVES
Tripping Characteristic of
JTECUL Circuit Breaker ( In < 10A )
e243698
Tripping Characteristic of
JTECUL Circuit Breaker ( In > 10A )
Trip Characteristics
Short Circuit (Instantaneous)
JTEC MCB’s use industry standard B, C, D instantaneous
trip characteristics. Which refer to the instantaneous
magnetic trip and are expressed in multiples of the
breaker current rating.
B Trip Curve
Overload (Thermal)
The thermal overload capabiltiy of the JTEC series is
130% in less than 1 hour. These overload trip times are
the same for B, C and D trip curves.
JTEC MCB’s are calibrated to fall as close as possible to
the center of the trip curve tolerances. Each JTEC trip
curve class is independently tested and approved.
Instantaneous trip of 3-5X breaker current rating.
Use this curve for protection of sensitive electrical/electronic
equipment or where a fast acting characteristic is required.
B curves are not suitable for use on circuits with inherent surge
currents such as motors, transformers or generators.
C Trip Curve
Instantaneous trip of 5-10X breaker current rating.
C curve is the ideal general purpose curve. Suitable for use on
mixed circuits with some natural surges. Use for general control panel device protection.
D Trip Curve
Instantaneous trip of 10-20X breaker current rating.
The D curve is intended for use on circuits with high inrush/
surge currents such as transformers, solenoids, small motors
and capacitors.
The inherent delay in the trip characteristic allows the normal
surges to subside without nuisance tripping.
Miniature Circuit Breakers – Type JTECUL by
APPLICATION GUIDELINES
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General
The trip curve is then chosen to match the intended application. Select breaker trip curve based on the following:
B trip
Sensitive electronic equipment with no inherent surges or
momentary overloads
• Solid state devices
• Switching power supplies
• Inputs and outputs for PLC’s
C trip
Ambient De-rating Factor
1.30
Multiple of Amp Rating
To meet the Canadian Electrical Code guidelines for 80%
circuit loading, JTEC MCB’s should be selected at 125% of
the nominal circuit/device full load current or 100% of the
connected wire ampacity, whichever is less. This will ensure
that the MCB’s provide the necessary degree of overload protection.
1.20
1.10
1.00
0.90
0.80
-20C
-10C
0C
10C
20C
30C
40C
50C
60C
Ambient temperature
Ambient Temperature De-rating
JTEC MCB’s are fully rated for ambients up to 32*C.
Mixed loads with some motor, transformer or solenoid content.
•
•
•
•
•
•
•
•
General small panel control with mixed devices
HVAC control
Lighting control panels
Discrete protection of lighting ballast
Machine tools
Mobile equipment, trailers
Vending machines, ATM’s
Marine electrical systems
Above 32°c - apply the appropriate de-rating factor found in
chart above to determine the MCB’s current carrying capability
at elevated temperatures.
Dimensions
D trip
Circuits consisting primarily of motor, transformer or solenoid/
coil content.
•
•
•
•
•
•
45mm
Motor starters
Pump control panels
Compressor and pump panels
Generator panels
Capacitor application
Transformer primary protection.

6.5
mm
44mm
60mm
96.8mm
17.5mm
77mm
Multiply width by number of poles required for overall width dimension.
Neutral poles and Shunt trips are same dimensions as 1P MCB’s.
Auxilliary contacts are same profile but 12.7mm wide.
Miniature Circuit Breakers – Type JTECUL
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e243698
cROSS rEFERENCE cHART
Techna
JtecUL
Moeller
Merlin Gerin
Electric FAZ Schneider C60
Tyco P&B
Weidmuller
H91 series
GE V line
Allen Bradley
Bulletin
ABB - S series
1492-CB
JtecUL1B
FAZ-B
C60-1B
W67X--20
-
V171
1492-CB1F
JtecUL2B
FAZ-2B
C60-2B
W68X--20
-
V172
1492-CB2F
JtecUL3B
FAZ-3B
C60-3B
W69X--20
-
V173
1492-CB3F
JtecUL1C
FAZ-C
C60-1C
W67X--22 & 23
9925 series
V071
JtecUL2C
FAZ-2C
C60-2C
W68X--22 & 23
9925 series
V072
JtecUL3C
FAZ-3C
C60-3C
W69X--22 & 23
9925 series
V073
JtecUL1D
FAZ-S
C60-1S
W67X--210
-
V371
1492-CB1H
JtecUL2D
FAZ-2S
C60-2S
W68X--210
-
V372
1492-CB2H
JtecUL3D
FAZ-3S
C60-3S
W69X--210
-
V373
1492-CB3H
S250, S260,
S270, S280,
S931N, S941N,
S951N, S971N
1492-CB1G
1492-CB2G
1492-CB3G
Disclaimer: It is the user’s responsibility to verify the suitability of suggested alternative.
New Products from Techna - Coming Soon
LEDtec Series
LEDtec Series
22mm LED pilot lights
MultiChip
LED Pilot Lights
Voltages
Ambient Temperature
Operating Position
Available Colours
: 12Vdc, 24Vac/dc, 48Vac/dc,110Vac & 230Vac
: -25C to +55C
: All Positions
: Amber, Blue, Green, Red, White
•For more information on the LEDtec Series Pilot Lights request bulletin LEDtec
•For information on Branch Rated MCB’s request bulletin JTEC 489
Distributor
599 Norris Crt
Kingston, Ontario
Canada, K7P 2R9
t: (800) 479-3875
f: (800) 866-7690
info@fusetek.com
www.fusetek.com
Printed in Canada
Miniature Circuit Breakers – Type JTECUL