MODbreak and MODpower
Circuit Breakers
Your economical power distribution solution
POWER DISTRIBUTION AND PROTECTION
NHP Electrical Engineering Products Pty Ltd
Sales 1300 NHP NHP
Sales 0800 NHP NHP
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Agility:
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when you need them.
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Scalability:
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expertise delivered by local people with with a local focus,
backed by global suppliers.
NHP ELECTRICAL ENGINEERING PRODUCTS PTY LTD
Sales 1300 NHP NHP | nhp.com.au |
MODbreak and MODpower
Your economical Power Distribution Solution
NHP are proud to introduce the new MOD series
range of economical power distribution Moulded
Case Circuit Breakers (MCCBs) and Air Circuit Breakers
(ACBs). The MODbreak and MODpower family of
products offer a complete range of circuit breakers
from 20 to 3200 amps and are ideally suited to the
commercial building market as well as contractors
and mechanical services.
The MOD series includes a complete suite of
accessories to complement the range including
remote operation, safety shrouds, off position
padlocking and much more.
MODpower
Ensuring free and easy selectivity software for use
with the MOD series range, NHP has also developed
MODcurve. This software enables customers to
make informed decisions regarding the electrical
protection of their installation from product selection
through to trip settings.
The MOD series also empowers users to upgrade
their circuit breakers to suit their requirements thanks
to the design that offers increased flexibility and easy
customer fit accessories.
MODbreak
3
Moulded Case Circuit Breakers
Range
MB4: 800-1250A
MB3: 400-630A
MB2: 63-250A
Features:
• From 16 A to 1250 A
• MCCBs for distribution systems
• 3 Pole and 4 Pole
• Manual, rotary handle or motorised versions
• Choice of 36kA and 50kA breaking capacities.
• Wide range of internal and external accessories
• Icu = Ics • Chassis options
• With Electronic and Thermal Magnetic protection relays
• Transfer switches and controllers
OCR options
Features of Thermal Magnetic OCR
Features of MTX1 Electronic OCR
• Adjustable overload setting 80% to 100% of ln
• Adjustable magnetic short circuit setting 6 – 10 ln
• Overload protection LT with selectable
inverse time delay
• Push to trip button
• Adjustable Short Time ST characteristic
• True RMS sensing
• Short circuit (ST) characteristic with selectable
time delay
• Infinite adjustment thermal and magnetic dials
• Refer ratings chart for additional setting details
• LT and ST characteristic can be switched OFF
• Fixed instantaneous trip
• DIP switch OCR setting
• Push to trip button
• Thermal memory enable / disable
• Power ON/pick up LED
• Self powered protection
• True RMS sensing
4
Moulded Case Circuit Breakers
Technical advantages
Standard charateristics
Markings & configuration
• Uimp : Impulse withstand voltage
• Ue : Rated operatioal voltage
Removable front terminal cover
• Ucu : Ultimate breaking capacity
• Ucs : Service breaking capacity
CE (european conformity)
• Utilisation category
NHP MCCB type reference
Main contacts position indication
Appliable standards
Operating toggle
Removeable OCR cover
Trip button
Pick-up LED (electronic MCCB’s)
Current rating of MCCB behind cover
Over current release setting
behind cover
Terminal connections behind cover
• Faster tripping
• Low watts loss
The unique speed contact system accelerates the opening of contacts during short circuit. This ensures faster tripping for current limiting.
The entire current carrying path is designed to achieve a very low watt loss
The result-very low let-through, cut-off current and fault clearing time
• Mechanical anti-reclosing
This unique feature ensures that under short circuit conditions, the contacts open and latch even before the release gives a trip command to the mechanism.
• Positive isolation
The MCCB toggle indicates the true position of the main switching contacts
• Double insulation
Internal accessories are housed in insulated casings to ensure a first level of insulation. When the front cover is opened for the fixing of internal accessories, the MCCB is totally insulated ensuring double insulation.
This avoids contact re-closing and bounce
Forward or reverse connection
MODbreak MCCBs can be forward or reverse connected to allow
reversal of line and load connections.
This is especially important for MB and MBC chassis where
MODbreak MCCBs are reverse connected on the chassis as standard.
5
MODbreak Moulded Case Circuit Breakers
Technical data
MCCB Ampere Frames (AF)
MCCB Types
250 A
400A
630A
MB2
MB3
MB3
D
N
Poles
D
N
3 or 4
3 or 4
Thermal magnetic dial adjustment range
Thermal Magnetic & Electronic
0.8 to 1.0 x In and 6 – 10 x Im
MB4
N
N
3 or 4
3 or 4
63, 160, 250, 320, 400
63, 160, 250, 320, 400, 630 A
800, 1000, 1250
Thermal Magnetic & Electronic
0.8 to 1.0 x In and 6 – 10 x Im
Thermal Magnetic & Electronic
0.8 to 1.0 x In and 6 – 10 x Im
Electronic
-
OCR (Over Current Relay) dataOCR (Over Current Relay) data
63, 100, 125, 160, 200, 250
Current Ratings of OCRs (A)
OCR types
D
800/1000/1250
MTX1 Electronic OCR data
OCR adjustments
via DIP switches
Adjustment range (LT)
0.4 to 1.0 in steps of 0.05 or OFF
Adjustment of LT time delay Ir
10s at 6 Ir or 3s at 6 Ir and 10s at 7.2 Ir or 3s at 7.2 Ir
LT Thermal memory
Enable / Disable (θ = ON or 0 = OFF)
Adjustment range (ST) Ir
1.5, 2.5, 4, 5.5, 6.5, 8 x Ir
Short time setting time delay
100ms / Instantaneous or OFF
Fixed Instantaneous OCR setting
10 x In
10 x In
MCCB data
Impulse withstand Voltage (kV)
8
8
8
8
690
690
690
690
750
AS/NZS / IEC / CE 750
AS/NZS / IEC / CE
750
AS/NZS / IEC / CE
750
AS/NZS / IEC /CE
Rated Operational Voltage (V) (max)
Rated Insulation Voltage (V)
Standard and approvals
AS/NZS 60947.2
IEC-60947-2
230 / 240 V AC
400 / 415 V AC
65
36
85
50
65
36
85
50
65
36
85
50
85
50
500 V AC
25
36
25
36
25
36
25
550 V AC
18
25
15
20
15
20
20
IcU
600 V AC
16
18
12
18
12
18
16
kA
690 V AC
10
15
8
15
8
10
10
250VDC (3P in series)
15
25
15
25
15
25
-
500VDC (3P in series) L/ R<15ms
5
10
5
10
5
10
-
100%
100%
100%
100%
100%
100%
100%
Ics as % lcu
Life span
Mechanical
25000
15000
15000
8000
Electrical @1.0 In
10000
4000
2000
750
Operating Frequency (Hz)
50 / 60
Total Opening Time
<10 msec
Finger-proof Terminals
Via use of MB terminal covers
<20 msec
Ambient Temperature
-5°C to + 55°C
Storage Temperature
- 35°C to + 70°C
Mounting Positions
Dimensions
(W x D x H)
Vertical and 90° to the left and right
3 Pole
105 x 96 x 179
140 x 111.5 x 266
140 x 111.5 x 266
210 x 143 x 370
4 Pole
140 x 95 x 179
183.5 x 111.5 x 266
183.5 x 111.5 x 266
278 x 143 x 370
2.5 / 3.3
5.5 / 7.2
6 / 7/.8
13 / 16
3
Weight (kg) (3/4 Pole)
Accessories
Internal
Auxiliary Contact
1C/O or 2C/O
Trip Alarm Contact
1C/O
Auxiliary & Trip Alarm Contact
1C/O + 1C/O
Shunt Release
110 - 415V 50/60Hz, 110 - 220V DC
External
Under Voltage Release
220 - 240 V 50 Hz
Extension handle
3
3
3
Direct mount handle
3
3
3
X
Handle mechanism padlock attachment
3
3
3
3
Captive toggle padlock attachment
3
3
3
3
Mechanical Interlock
3
3
3
X
Motor operator for remote operation
3
3
3
X
Transfer switch controller
3
3
3
3
Spreader bars for MCCB terminals
3
3
3
3
Terminal covers - same width as MCCB
3
3
3
3
Terminal covers - wide width
3
3
3
X
Terminal covers - flush
3
3
3
X
Interpole barriers – c/w with MCCB
3
3
3
3
Chassis rated 800A for 250AF
3
3
3
X
Chassis (high current) up to 2200A
3
3
3
X
MODpower Air Circuit Breakers
Range
MP1-12S
MP1-16S
Features:
• Current rating from 400 A to 4000 A in
3 frames sizes
• Superior safety features - arc chute interlock, smart racking shutter, ready to close contact.
Available in 3 Pole/4 Pole, Manually &
Electrically operated, Fixed / Draw-out
versions
• Modular & snap-fit accessories such as UVT and shunt trip, customise on time scale of
5 mins.
• Common Height & Depth across the range
• Ease of on-site convertibility from Manual
to Electrical operation
• High short time fault withstand capacity, Icu = Ics = Icw for 1 sec for total selectivity
• High mechanical and electrical operating life
• In-built Electrical & Mechanical
Anti-Pumping mechanism
• Complete range conform to IEC 60947-2
• RoHS compliant
• Unique breaker front-facia architecture
displays the electrical accessories equipped on the ACB (with rated control voltage)
• Unipolar, snap-fit control terminals for
independent termination of 2 wires of up
to 2.5 mm each
• ON & OFF buttons can be independently padlocked to prevent unauthorized access
•
Up to 3 breakers can be mechanically inter
locked using bowden cable. The Interlock is
suitable for fixed, draw-out or a combination of MODpower ACB’s
Breaking capacities:
Rated current
1250 A
1600 A
2000 A
2500 A
Frame 1
S: 65kA
MP1-12
MP1-16
MP1-20
MP1-25
Frame 2
S: 65kA
MP2-25
3200 A
MP2-32
7
MODpower Air Circuit Breakers
MTX Over current release
Features:
• Modbus, Profibus & Zigbee communication protocols
• Pluggable communication & power metering • Energy monitoring & control through Energy modules for customisation & enhansed Management system
functionality
• Smart card module for ease of parameterisation
• Dual protection set-groups & password protection
• Protection releases conform to EMI/EMC • Fault indiciation through LED display & pre-trip alarm
standard IEC 62052-11EN
• Trip & event recording query button for last trip record
• Unique O-LED display for wider viewing angle
• Front accessible test port
• Provision for on-load self-diagnosis of releases
Features
Basic protection
Additional protection
Trip Records
Event Records
Smart Card
Communication
Metering
Parameter
Overload - Phase
Overload - Neutral
Short circuit
Directional short circuit
Instantaneous
Earth fault
Current
Voltage
Frequency
Reverse power
Maximum demand
Last 5 trip data
Last 10 event data
Modbus
Profibus
Zigbee (wireless)
Current
% Loading
Voltage
Power & energy
Storable settings (2 sets)
Auxiliary Supply (24 VDC)
MTX 3.5
3
3
3
3
3
3
3
*
*
*
*
3
3
*
*
*
*
3
3
*
*
3
3
* - available as optional. For detailed information please refer MODpower manual
MTX Simulation kit:
• Generates 3 phase current and voltage with adjustable phase angles
• Graphical display & smart GUI with multi functional key operation
• Portable & hand held device to simulate faults
• Dual power ON - battery & external supply
• Auto sensing of connectivity
• Memory card for data storage up to 32 GB
• Stores 10 test records
8
Air Circuit Breakers
Technical data table
Frame
1
Rated uninterrupted current (In) (A)
Version
Rated operational voltage at 50/60 Hz.
400-1600
2000
S
S
Ue
Rated insulation voltage at 50/60 Hz.
Rated Impulse withstand voltage
2
3
2500
400-3200
400-4000
S
S
H
upto 690V
Ui
1000V
Uimp
12kV (Main Circuit)
Suitability for isolation
Yes
Degree of protection on breaker front
IP53 Intrinsic, IP54 available
Pollution degree suitability
3
Utilisation category
B
Compliance
AS/NZS3947-2, IS/IEC 60947 (Part-2), EN60947-2, IEC 60947-2
Rated ultimate S.C.
breaking capacity
Icu (kA)
400/415 V
65
65
65
65
80
500/550 V
55
55
55
55
65
660/690 V
50
50
50
50
55
400/415 V
Rated service S.C.
Breaking capacity
Icu (kA)
500/550 V
100% icu
660/690 V
Rated short time
withstand capacity
Icu (kA)
Rated S.C. making
capacity
Icu (kA)
0.5sec.
65
65
65
65
80
1.0sec.
65
65
65
65
80
3.0sec.
36
36
36
36
50
400/415 V
143
143
143
143
176
500/550 V
121
121
121
121
143
660/690 V
105
105
105
105
121
Opening time (ms)
40
Closing time (ms)
60
Mechanical life
Electrical life
with maintenance
20000
15000
10000
with maintenance
20000
15000
10000
5000
5000
without maintenance
8000
10000
5000
Dimension details:
MODpower offers common depth (421mm) and height (433mm) across the entire range.
Frame
Poles
A (mm)
1
3
347
4
447
3
447
4
581
3
647
4
847
2
3
IP53
9
IS/IEC 60947 - 2, EN 60947- 2,IEC 60947 - 2
Frame
I
I
II
I
III
Software
Overview
MODcurve is a selectivity analysis software package developed by NHP specifically for the Australian
and New Zealand markets. Designed around the MOD series of ACBs and MCBs as well as NHP’s
extensive range of MCBs and fuses, MODcurve presents a user-friendly interface for conducting
selectivity studies.
Features
• Simple and easy to use
• Can be used for coordination with upstream HV fuses
• Includes both MOD6 and Din T ranges of MCBs
• User defined devices can be added
• Ability to print report with single line diagram and circuit breaker settings included
curve
10
MOD series information Available
NHP have a full range of technical documentation for the MOD series available:
Please contact your NHP representative for more information.
CAD blocks
Chassis drawings
Accessories fitting instructions
Upstream
Manuals
MB2 250 DTM MCCBThermal Magnetic 36 kA
MB2 250 NTM MCCBThermal Magnetic 50 kA
Downstream
MOD6 6 kA
MCBs & RCBOs
DIN-T 6 kA
MCBs & RCBOs
Current
rating
≤32
40
50-63
≤32
40
50-63
63 A
100 A
125 A
160 A
250 A
25 / 25
-- / 25
-- / 25
25 / 30
-- / 30
-- / 30
25 / 25
25 / 25
-- / 25
25 / 30
25 / 30
-- / 30
25 / 25
25 / 25
25 / 25
25 / 30
25 / 30
25 / 30
25 / 25
25 / 25
25 / 25
25 / 30
25 / 30
25 / 30
25 / 25
25 / 25
25 / 25
25 / 30
25 / 30
25 / 30
MCCB cascading /selectivity charts
Secondary injection instructions
Wiring diagrams
11
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