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Class 0613DC
Masterpact NW DC CircuitBreakers
CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page
Contents Line 1 . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pagex
Contents Line 2 . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page xContents Line 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page x
Catalog
0613CT0501R1/07
2007
Building a New Electric World
CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
MicrologicDC1.0 Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 32Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 35Trip Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 54Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 60
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Masterpact NW DC Circuit BreakersGeneral Information
Section 1General Information
Introduction
Masterpact NW Circuit Breakers are designed to protect electrical systems from damage caused by
short circuits. All Masterpact circuit breakers are designed to open and close a circuit manually, and toopen the circuit automatically at a predetermined overcurrent setting.
Selection of a dc circuit breaker is based on the type of dc system, the rated voltage, and the maximumshort-circuit current at the point of installation. ULListed circuit breakers are for use on ungroundedsystems rated 500 Vdc (600 Vdc unloaded) or less. IEC Rated circuit breakers are for use onungrounded, grounded middle point, or grounded negative systems.
Codes and Standards
Masterpact circuit breakers are manufactured and tested in accordance with the following standards:
Circuit breakers should be applied according to guidelines detailed in the National Electrical Code(NEC) and other local wiring codes.
Masterpact circuit breakers are available in Square D, Merlin Gerin, or Federal Pioneerbrands.
UL File Numbers:
Masterpact NW: E63335, Vol. 4, Sec. 1
Features and Benefits
100% Rated Circuit Breaker: Masterpact circuit breakers are designed for continuous operation at100% of their current rating.
True Two-Step Stored Energy Mechanism: Masterpact circuit breakers are operated via a stored-energy mechanism which can be manually or motor charged. The closing time is less than five cycles.Closing and opening operations can be initiated by remote control or by push buttons on the circuitbreaker front cover. An OCO cycle is possible without recharging.
Drawout or Fixed Mount, 3-Pole (3P) or 4-Pole (4P) Construction: UL Listed (3P only) and IECRated (3P or 4P) Masterpact circuit breakers are available in drawout or fixed mounts.
Field-Installable Accessories: Most accessories are field installable with only the aid of a screwdriverand without adjusting the circuit breaker. The uniform design of the circuit breaker line allows mostaccessories to be common for the whole line.
Reinforced Insulation: Two insulation barriers separate the circuit breaker front from the current path.
Isolation Function by Positive Indication of Contact Status: The mechanical indicator is trulyrepresentative of the status of all the main contacts.
Segregated Compartment: Once the accessory cover has been removed to provide access to theaccessory compartment, the main contacts remain fully isolated. Furthermore, interphase partitioningallows full insulation between each pole even if the accessory cover has been removed.
Front Connection of Secondary Circuits: All accessory terminals (ring terminals are available as anoption) are located on a connecting block which is accessible from the front in the connected, test anddisconnected positions. This is particularly useful for field inspection and modification.
Insulated Case Circuit Breaker IECRated Circuit Breaker IEC Extreme Atmospheric Conditions
UL 489 (UL Listed to Supplement SC)
NEMA AB1
CSA C22.2 No. 5-02
IEC 60947-2
IEC 68-2-1: Dry cold at 55CIEC 68-2-2: Dry heat at +85C
IEC 68-2-30: Damp heat (temp. +55C, rel. humidity 95%)
IEC 68-2-52 Level 2: Salt mist
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Anti-Pumping Feature: All Masterpact NW circuit breakers are designed with an anti-pumping featurethat causes an opening order to always takes priority over a closing order. Specifically, if opening andclosing orders occur simultaneously, the charged mechanism discharges without any movement of themain contacts keeping the circuit breaker in the open (OFF) position.
In the event that opening and closing orders are simultaneously maintained, the standard mechanismprovides an anti-pumping function which continues to keep the main contacts in the open position.
In addition, after fault tripping or opening the circuit breaker intentionally (using the manual or electricalcontrols and with the closing coil continuously energized) the circuit breaker cannot be closed until thepower supply to the closing coil is discontinued and then reactivated.
NOTE: When the automatic reset after fault trip (RAR) option is installed, the automatic control systemmust take into account the information supplied by the circuit breaker before issuing a new closingorder or before blocking the circuit breaker in the open position.
Disconnection Through the Front Door: The racking handle and racking mechanism are accessiblethrough the front door cutout. Disconnecting the circuit breaker is possible without opening the doorand exposing live parts.
Drawout Mechanism: The drawout assembly mechanism allows the circuit breaker to be racked infour positions (connected, test, disconnected, or withdrawn), as shown in the figure below.
NOTE: For UL circuit breakers, the clusters are mounted on the circuit breaker; for IEC circuitbreakers, the clusters are mounted on the cradle.
Figure 1: Racking Handle and Mechanism
Figure 2: Racking Positions
06133341
T TEST06133339
0613383
2
DisconnectedPosition
Closing and Opening Push Buttons
Racking Handle Storage Space
Racking Handle
Racking Mechanism
Door Escutcheon
T TEST TESTT
T06133339
06133830
Connected Position
Disconnected Position Withdrawn Position
Test Position
SecondaryContacts
Stabs (IEC)Clusters (UL/ANSI)
Clusters (IEC)Stabs (UL/ANSI)
TEST
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Masterpact NW DC Circuit BreakersGeneral Information
Reduced Maintenance: Under normal operating conditions, the circuitbreaker does not require maintenance. However, if maintenance orinspection is necessary, the arc chambers are easily removed so you mayvisually inspect the contacts and wear indicator groove (see the figurebelow for how wear is indicated). The operation counter can also indicatewhen inspections and possible maintenance should be done.
Operating Conditions
Masterpact circuit breakers are suited for use:
At ambient temperatures between -22F (-30C) and 140F (60C)
At altitudes +13,000 ft. (3900 m)
Masterpact circuit breakers have been tested for operation in industrial atmospheres. It isrecommended that the equipment be cooled or heated to the proper operating temperature and keptfree of excessive vibration and dust. Operation at temperatures above 104F (40C) may requirederating or overbussing the circuit breaker. See the appropriate instruction bulletin and page 11of thiscatalog for additional information.
Masterpact circuit breakers meet IEC 68-2-6 Standards for vibration.
2 to 13.2 Hz and amplitude 0.039 in. (1 mm)
13.2 to 100 Hz constant acceleration 0.024 oz. (0.7 g.)
The materials used in Masterpact NW circuit breakers will not support the growth of fungus and mold.
Masterpact circuit breakers have been tested to the following:
IEC 68-2-30 Damp heat (temperature +55C and relative humidity of 95%) IEC 68-2-52 level 2 salt mist
Storage Temperature
Circuit breakers with trip units without LCD displays may be stored in the original packaging attemperatures between -58F (-50C) and 185F (85C). For circuit breakers with trip units with LCDdisplays, this range is -40F (-40C) to 185F (85C).
Figure 3: Contact Wear Indicators
06133470
Arc Chamber
06133185a
Wear Indicator Groove
Good
ContactsWorn
Contacts
Wear Indicator Groove
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Masterpact NW DC Circuit BreakersGeneral Information
Masterpact NW Circuit Breaker Design
NOTE: For UL Listed circuit breakers, the clusters are mounted on the circuit breaker; for IEC Ratedcircuit breakers, the clusters are mounted on the cradle.
RESET
Shunt Trip (MX2) orUndervoltageTrip Device (MN)
Auxiliary ControlConnection
Trip Unit Connection toOvercurrent Trip Switch
Cradle Rejection Kit
Cluster
Overcurrent Trip Switch (SDE2)or Electric Reset
Overcurrent TripSwitch (SDE1)
Mounting Plate forFixed Circuit Breaker
Lifting Tab
Trip Unit
Circuit BreakerCommunication Module
Key Interlock
Padlock Attachment
Push-to-reseton Fault Trip
Open/CloseIndicator
Charged/DischargedIndicator
Faceplate
Operation Counter
Opening Push Button
Closing Push Button
Spring-charging Motor (MCH)
Charging Handle
Ready-to-close Contact (PF)
Shunt Close (XF)
Block of Four Form CAuxiliary Contacts (OF)
Two Blocks of Four Additional Switches (OF) orCombined "Connected, Closed" Switches (EF)
Auxiliary Contact Connection
Shunt Trip (MX1)
Arc Chamber
Open/Close PushButton Cover(lockable with padlock)Electrical Close
Push Button (BPFE)
Cluster (UL)Primary Stab(IEC)
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Masterpact NW DC Circuit BreakersGeneral Information
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Masterpact NW Cradle Design
Pull-Out Handgrip
Primary Stabs (UL)Clusters (IEC)
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Masterpact NW DC Circuit BreakersGeneral Information
DC Systems
Selection of a dc circuit breaker is based on the type of dc system, the rated voltage, and the maximumshort-circuit current at the point of installation.
The three types of dc systems are:
Table 1: DC Systems
Distribution System Faults Fault Comments Worst Case
Fault B
Isc maximum
Both polarities (positive andnegative) are involved in thefault
Simultaneous faults at A andD or C and E
Either polarity may beinvolved at Voltage U
Fault A or C No consequences
Faults A and D
or
Faults C and E
Isc max
Either polarity may beinvolved at voltage U
Fault B
Isc maximum
Both polarities (positive andnegative) are involved in thefault
Fault B
Each polarity may beinvolved at voltage U/2
Fault A or C
Isc < Isc maximum at U/2
The negative or positivepolarity is involved
Fault A
Isc maximum
Positive polarity is involvedin the fault
Fault A
All poles taking part inbreaking must be placed inseries on the positivepolarity. If the negativepolarity is grounded, anadditional pole must beprovided to be used forisolation of the negative polebut not for breaking
Fault B
Isc maximum
Both polarities (positive andnegative) are involved in thefault
06135605
D C
AB
LoadU
i
E
Isolated Source
06135606
C
AB
LoadU/2
i
U/2
Grounded Middle Point
061
35607
C
AB
LoadU
i
Grounded Negative
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Circuit Breaker Connection
Table 2: Circuit Breaker Connection Based on Distribution System
Type
Type N
24 Vdc UN 500 Vdc
Type H
24 Vdc UN 500 Vdc
Type H
500 Vdc
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Masterpact NW DC Circuit BreakersGeneral Information
Frame Sizes and Interrupting ratings
Line Line
Load
06135602
LineLine
Load
06135603
Line Line
Load
06135604
Version C
Version D
Version E
Load Diagrams Table 3: Interrupting Ratings for UL 489 Listed Masterpact NW Circuit Breakers
Model
Number(Version C)
Circuit
BreakerRating
Endurance Rating (C/O cycles)
(with no maintenance)Breaking Capacity1500 Vdc
(max 600 Vdc unloaded)L/R 8 ms
1 This circuit breaker is only suitable for use on ungrounded UPS systems, as stipulated in UL 489 standard supplement SC (SC11.4 andSC11.5)
Breaking
Time
Closing
TimeMechanical Electrical
NW08NDC
NW12NDC
NW16NDC
800 A
1200 A
1600 A
10,000 2800
35 kA 30 to 75 ms
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Correction Factors
Shipping Weights
Table 5: Temperature Correction Factors
Maximum Ambient Temperature
F 140 122 104 86 77 68 50 32 14 4 22
C 60 50 40 30 25 20 10 0 10 20 30
Current 0.83 0.92 1.00 1.07 1.11 1.14 1.21 1.27 1.33 1.39 1.44
Table 6: Altitude Correction Factors
< 6600 ft. (2000 m) 8500 ft (2600 m) 13,000 ft. (3900 m)
Voltage 1.00 0.95 0.80
Current 1.00 0.99 0.96
Table 7: Weights for UL 489 Listed Masterpact NW Circuit Breakers
Frame RatingConnector
Type
Weights (lbs./kg.)
Circuit
BreakerCradle Connector Pallet Total
8002500 A, Drawout RCTH/RCTV109 lbs.(50 kg)
97 lbs(44 kg)
17 lbs(8 kg)
17 lbs(8 kg)
240 lbs(109 kg)
8002500 A, Fixed-Mounted RCTH/RCTV109 lbs.(50 kg)
17 lbs(8 kg)
17 lbs(8 kg)
143 lbs(65 kg)
30004000 A, Drawout RCTH/RCTV109 lbs.(50 kg)
97 lbs(44 kg)
26 lbs(12 kg)
17 lbs(8 kg)
249 lbs(114 kg)
30004000 A, Fixed-Mounted RCTH/RCTV109 lbs.(50 kg)
26 lbs(12 kg)
17 lbs(8 kg)
152 lbs(70 kg)
Table 8: Weights for IEC 60947-2 Rated Masterpact NW Circuit Breakers
VersionCircuit Breaker
Z-Connector
NW10DCNW20DC NW40DC
Type Weight Type Weight Type Weight
C/D
3P Fixed132 lbs(60 kg)
6 lb.(2.5 kg)
29 lbs(13 kg)
3P Drawout198 lbs(90 kg)
E
4P Fixed176 lbs
(80 kg)
4P Drawout264 lbs(120 kg)
06135577
06135581
061355
82
06135578
0613
5579
06135580
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Masterpact NW DC Circuit BreakersMicrologicDC1.0 Trip Unit
Section 2MicrologicDC1.0 Trip Unit
All Masterpact NW DC circuit breakers are equipped with Micrologic DC1.0 trip units, which isdesigned to protect power circuits and load devices.
The Micrologic DC1.0 trip unit:
is associated with sensors with instantaneous trip values than can be adjusted on the front of thetrip unit
has three sensor versions provide different threshold ranges:
12502500 A
25005400 A
500011000 A
See trip curves, Figure 52
has an instantaneous protection with no time delay settings
has no overload protection provided
Micrologic DC1.0
Circuit breaker family
Type of protection
1 = instantaneous
Figure 4: Micrologic DC1.0 Trip Unit
Test
RESET
06135537
Imo
t
l
Micrologic DC1.0
instantaneous
instantan
instantan o
A1 = A2 =B1 = B2 =C1 = C2 =D1 = D2 =
E1 = E2 =
2500A3300A4000A5000A
5400A
06135525
06135526
Imo
t
l
B D ECA
Figure 5: Circuit Breaker Configuration and Sensor Locations
06135548
Micrologic
Trip Unit
Micrologic
Trip Unit
Micrologic
Trip Unit
Line Line Line Line Line Line
Load Load Load
Version C (3P) Version D (3P) Version E (4P)
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has sensor adjustment dials accessible in front of the circuit breaker behind the door of the cubicle.Both sensors must have the same settings.
NOTE: Dials are normally set to setting marked, for example B1 and B2 for 8000 A. Elevenintermediate values can also be set which are not indicated on the adjustment knob, for examplebetween A and B for 6000 A.
Figure 6: Sensor Adjustment Dials
instantaneous
instantan
instantan o
A1 =A2= 2500A
B1 =B2= 3300A
C1 =C2 = 4000A
D1 =D2 = 5000A
E1 =E2= 5400A
O IMicrologic DC1.0
instantaneousinstantan
instantan o
A1= A2=B1 = B2 =C1 = C2=D1 = D2 =E1 = E2 =
2500A3300A4000A5000A5400A
A
ED
C
instantaneousinstantaninstantaneo
Pousser puis tourner :-sens horaire p/augmenter- sens antihora ire p/ diminuercommutateurs : m me r glage
Push then turn :-toset higher,turnright-to setlower,turn l e ftknobs : same setting
Empujar y rodar :- sentido horario p/ aumentar-sentido antihorario p/ disminuirconmutadores : mismo reglaje
B
1 AE C
B
2D
1A
ED
C
B 2A
ED
C
B
06135527
06135652
Table 9: Im Thresholds
Sensor A B C D E
12502500 A 1250 A 8% 1500 A 10% 1600 A 10% 2000 A 10% 2500 A 10%
25005400 A 2500 A 8% 3300 A 10% 4000 A 10% 5000 A 10% 5400 A 10%
500011,000 A 5000 A 8% 8000 A 10% 10000 A 10% 11000 A 10% 11000 A 10%
Table 10: Sensors
Frame
Rating
Model
Number
Sensor Type
12502500 A 25005400 A 500011,000 A
800 A NW08 X X X
1000 A NW10 X X X
1200 A NW12 X X X
1600 A NW16 X X X2000 A NW20 X X X
2500 A NW25 X X
3000 A NW30 X X
4000 A NW40 X
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Masterpact NW DC Circuit BreakersAccessories
Section 3Accessories
Remote Operation
NOTE: When remote operation features are used, a minimum of four seconds is required for the spring
charging motor (MCH) to completely charge the circuit breaker closing springs prior to actuating theshunt close (XF) device.
The remote ON/OFF function is used to remotely open and close the circuit breaker. It is made up ofthe following components:
A spring-charging motor (MCH) equipped with a spring-charged limit switch; see page 15for moreinformation
A shunt close (XF); see page 15for more information
A shunt trip (MX1); see page 15for more information
Optionally, the function may be completed with:
A ready-to-close contact (PF)
An electrical closing push button (BPFE)
A remote reset following a fault (RES)
The remote operation function may be completed with:
Auxiliary contacts (OF)
Overcurrent trip switch (SDE)
NOTE: Induced voltages in the circuit at terminal C2 and/or A2 can cause the shunt close to not workproperly. The best way to prevent induced voltages is keep the circuit to terminal C2 and A2 as shortas possible. If it is impossible to keep the circuit less than 10 feet (3 m), use an interposing relay nearterminal C2 or A2.
Terminals
Figure 7: Wiring Diagram for Remote ON/OFF Function
12 14
11
OF1
82 84
81
SDE
252 254
251
PF
A2
XF
A1
MX
C2
C1
MCH
B3 B2
B1
CH
SpringCharged
OpeningOrder
ClosingOrder
Ready toClose
Fault
Open Closed06133264
06133832
Masterpact Circuit BreakerEquipped for RemoteON/OFF Function
Terminal
Table 11: Terminal Characteristics
Standards UL 486E
Termination Capacity 2214 AWG solid or stranded wire with max. O.D. of insulation 3.5 mm
CurrentNominal 10 A
Minimum 100 mA at 24 V
Pull-Out Forces
22 AWG = 4.5 lbs (20 N)
20 AWG = 6.75 lbs (30 N)
18 AWG = 6.75 lbs (30 N)
16 AWG = 9 lbs (40 N)
14 AWG = 11.5 lbs (50 N)
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Spring-Charging Motor (MCH)
The spring-charging motor automatically charges the spring mechanism for closing the circuit breakerand also recharges the spring mechanism when the circuit breaker is in the ON position.Instantaneous reclosing of the circuit breaker is thus possible following circuit breaker opening. Thespring-mechanism charging handle is used only as a backup if auxiliary power is absent.
The spring-charging motor is equipped as standard with a limit switch contact (CH) that signals thecharged position of the mechanism (springs charged).
Shunt Trip (MX1) and Shunt Close (XF)
Maximum Wire LengthThe inrush currents for these devices are approximately 200 VA. When lowsupply voltages (12, 24 or 48 V) are used, the maximum allowable wire length is dependent on thevoltage and the wire size.
Shunt trip (MX1):When energized, the shunt trip instantaneously opens the circuit breaker. The shunttrip may be supplied continuously or intermittently.
Shunt close (XF):Remotely closes the circuit breaker if the spring mechanism is charged.
Spring ChargingMotor
Table 12: Spring Charging Motor Characteristics
Characteristics MCH
Voltage Ratings (Vn)Vac 50/60 Hz 48/60, 100/130, 200/250, 240/277, 380/415, 400/440, 480
Vdc 24/30, 48/60, 100/125, 200/250
Operating Threshold 0.85 to 1.1 Vn
Power Consumption 180 VA
Motor Overcurrent 23 x Infor 0.1 s
Charging Time 4 s maximum on NW
Duty Cycle 3 cycles per minute maximum
Endurance
10,000 cycles for NW < 4000 A
5000 cycles for NW 4000 A
CH Contact 10 A at 240 V
Shunt Trip (MX1) andShunt Close (XF)
Table 13: Maximum Wire Length1
1 The length shown in the table is for each of the two supply wires.
DevicePercent of
Source Voltage
Source Voltage
12 Vdc 24 Vdc 48 Vdc
Wire Size
14 AWG
(2.08 mm2)
16 AWG
(1.31 mm2)
14 AWG
(2.08 mm2)
16 AWG
(1.31 mm2)
14 AWG
(2.08 mm2)
16 AWG
(1.31 mm2)
UVR (MN)
100% 159 ft.(48.5 m)
100 ft.(30.5 m)
765 ft.(233.2 m)
472 ft.(143.9 m)
85% 44 ft.(13.4 m)
29 ft.(8.8 m)
205 ft.(62.5 m)
129 ft.(39.3 m)
Shunt Trip (MX) andShunt Close (XF)
100%57 ft.(17.4 m)
34 ft.(10.4 m)
314 ft.(95.7 m)
200 ft.(61.0 m)
1503 ft.(457.8 m)
944 ft.(287.7 m)
85%27 ft.(8.2 m)
17 ft.(5.2 m)
205 ft.(62.5 m)
126 ft.(38.4 m)
957 ft.(291.7 m)
601 ft.(183.2 m)
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Masterpact NW DC Circuit BreakersAccessories
Additional Shunt Trip (MX2) or Undervoltage Trip (MN)
This function opens the circuit breaker via an electrical order.
It is made up of:
Shunt trip (MX2, second MX) or,
Undervoltage trip (MN)
Instantaneous trip
Fixed undervoltage trip (time delayed) or,
Adjustable undervoltage trip (time delayed)
As shown in the wiring diagram for the remote tripping function below, the delay unit (installed outsidethe circuit breaker) may be disabled by an emergency off button to obtain non-delayed opening of thecircuit breaker.
When energized, the shunt trip (MX1) instantaneously opens the circuit breaker. A continuous supplyof power to the second shunt trip (MX2) locks the circuit breaker in the off position.
The undervoltage trip (MN) instantaneously opens the circuit breaker when its supply voltage drops toa value between 35% and 70% of its rated voltage.
If the undervoltage trip is not energized, it is impossible to close the circuit breaker, either manually orelectrically. An attempt to close the circuit breaker produces no movement of the main contacts.Closing is allowed when the supply voltage of the undervoltage trip reaches 85% of rated voltage.
Table 14: Shunt Trip and Shunt Close Characteristics
Characteristics MX1 XF Min Max
Voltage Ratings (Vn)
Vac
50/60 Hz
24 Vac 17 Vac 26 Vac
48 Vac 34 Vac 52 Vac
120 Vac 60 Vac 132 Vac
240 Vac 168 Vac 264 Vac
277 Vac 194 Vac 304 Vac
380 Vac 266 Vac 418 Vac
480 Vac 336 Vac 528 Vac
Vdc
12 Vdc 8 Vdc 13 Vdc
24 Vdc 17 Vdc 26 Vdc
48 Vdc 34 Vdc 52 Vdc
125 Vdc 88 Vdc 137 Vdc
250 Vdc 175 Vdc 275 Vdc
Operating Threshold 0.7 to 1.1 Vn 0.85 to 1.1 Vn
Power Consumption (VA or W) Steady-State/Inrush 4.5/200
Circuit Breaker Response Time at Vn1
1 Shunt trip (MX1) and shunt close (XF) circuits must be energized for minimum of 200 ms.
50 ms 1070 ms 10 (NW 4000 A)
80 ms 10 (NW > 4000 A)
Second Shunt Trip (MX2)
Figure 8: Wire Diagram for the Remote Tripping Function
D1
10 12
3 6
MN
D2
D1MN
D2MX2
C12
C1
or
1
OpeningOrder
OpeningOrder
DelayedOpeningOrder
Instantane-ous OpeningOrder
DelayedUnit
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Time-Delay Module for Undervoltage Trip
To eliminate circuit breaker nuisance tripping during temporary voltage dips (micro-breaks), operationof the undervoltage trip (MN) can be delayed. This function is achieved by adding an external delayunit (either adjustable or non-adjustable) to the undervoltage trip (MN) circuit.
Table 15: Undervoltage Trip Characteristics
Characteristics MX2 Min Max
Voltage Ratings (Vn)
Vac
50/60 Hz
24 Vac 17 Vac 26 Vac
48 Vac 34 Vac 52 Vac
120 Vac 60 Vac 132 Vac
240 Vac 168 Vac 264 Vac
277 Vac 194 Vac 304 Vac
380 Vac 266 Vac 418 Vac
480 Vac 336 Vac 528 Vac
Vdc
12 Vdc 8 Vdc 13 Vdc
24 Vdc 17 Vdc 26 Vdc
48 Vdc 34 Vdc 52 Vdc
125 Vdc 88 Vdc 137 Vdc
250 Vdc 175 Vdc 275 Vdc
Power Consumption (VA or W) Constant/Inrush 4.5/200
Circuit Breaker Response Time at Vn 50 ms 10
Time-Delay Module forUndervoltage Trip (MN)
Table 16: Time-Delay Module Characteristics
Voltage Ratings of Undervoltage TripVac 50/60 Hz 24/30, 48/60, 100/130, 200/250, 380/480
Vdc 24/30, 48/60, 100/130, 200/250
Voltage Ratings of Time-Delay Module
AdjustableVac 50/60 Hz 48/60, 100/130, 200/250, 380/480
Vdc 48/60, 100/130, 200/250, 380/480
Non-AdjustableVac 50/60 Hz 100/130, 200/250
Vdc 100/130, 200/250
Operating ThresholdOpening 0.35 to 0.7 Vn
Closing 0.85 VnPower Consumption 4.5 VA/W (Holding), 200 VA/W (Inrush)
Time-Delay SettingsAdjustable 0.5, 0.9, 1.5, and 3.0 s
Non-Adjustable 0.25 s
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Masterpact NW DC Circuit BreakersAccessories
Switches
Ready-to-Close Switch (PF)
The ready-to-close position switch indicates that the following conditions are met and the circuitbreaker can be closed:
The circuit breaker is open The closing springs are charged
There is no standing closing or opening order
Electrical Closing Push Button (BPFE)
Located on the front panel of the circuit breaker, this pushbutton carries out electrical closing of the circuit breaker,taking into account all of the safety functions that are partof the control/monitoring system of the installation. Thepush button is installed on the control circuit of the shuntclose, and connects to the communicating shunt closemodule (XF-COM). Terminal A2 of XF-COM is used toremotely close the circuit breaker.
Remote Reset (RES) and Automatic Reset After Fault Trip
Following tripping, the remote reset (RES) resets the overcurrent trip switch (SDE) and themechanical indicator. (Voltage rating: 110/130 Vac and 200/240 Vac.) RES is not compatible withan additional overcurrent trip switch (SDE2).
Automatic reset after fault-trip: Following tripping, a reset of the mechanical indicator (reset button)is no longer required to enable circuit breaker closing (factory adjustable only).
Ready-to-CloseSwitch (PF)
Table 17: Ready-to-Close Switch Characteristics
Type of Contact 1a/1b Form C
Maximum Number of Contacts 1
Breaking Capacity at aPower Factor (p.f.) of 0.3
Standard: 100 mA/24V minimum load Low-Level: 2 mA/15 V minimum load
240/380 Vac 5 A 24/48 Vac 3 A
480 Vac 5 A 240 Vac 3 A
600/690 Vac 3 A 380 Vac 3 A
24/48 Vdc 3 A 24/48 Vdc 3 A
240 Vdc 0.3 A 125 Vdc 0.3 A380 Vdc 0.15 A 250 Vdc 0.15 A
BPFE
A2 A3
XF
A1
Remote Orderto Close
06133804
Electrical ClosingPush Button (BPFE)
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Auxiliary Switch (OF)
The rotary-type auxiliary switches are directly driven by the trip mechanism when the minimumisolation distance between the main circuit breaker contact is reached.
Overcurrent Trip Switch (SDE)
Circuit breaker tripping due to a fault is signalled by a red mechanical fault indicator (reset) and oneovercurrent trip switch (SDE).
Following tripping, the mechanical indicator must be reset before the circuit breaker may be closed. Anadditional overcurrent trip switch (SDE2) is supplied as an option and is not compatible with the remotereset (RES).
Auxiliary Switch (OF)with Four Contacts
Table 18: Auxiliary Switch Characteristics
Supplied as Standard (Form C) 4
Maximum Number of Contacts 12
BreakingCapacity at aPower Factor(p.f.) of 0.3
Standard (100 mA/24 V minimum load)
Vac
240/380 10 A
480 10 A
600/690 6 A
Vdc
24/48 10 A
240 10 A
380 3 A
Low-Level (1 mA/4 V minimum load with a maximum current and voltage of 100 mA/10 V.
Note: If the maximum voltage and current is exceeded, the low-level function of the switchwill be lost but the switch will continue to function as a standard switch with the followingspecifications.
Vac
24/48 Vac 6 A
240 Vac 6 A
380 Vac 3 A
Vdc
24/48 Vdc 6 A
125 Vdc 6 A
250 Vdc 3 A
Overcurrent TripSwitch (SDE)
Table 19: Overcurrent Trip Switch Characteristics
Supplied as Standard 1a/1b Form C
Maximum Number of Contacts 2
Breaking Capacity at a Power Factor(p.f.) of 0.3
Standard: 100 mA/24 V Minimum Load Low-Level: 2 mA/15 V Minimum Load
240/380 Vac
480 Vac
600/690 Vac
5 A
5 A
3 A
24/48 Vac
240 Vac
380 Vac
3 A
3 A
3 A
24/48 Vdc
240 Vdc
380 Vdc
3 A
0.3 A
0.15 A
24/48 Vdc
125 Vdc
250 Vdc
3 A
0.3 A
0.15 A
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Masterpact NW DC Circuit BreakersAccessories
Connected/Closed Switch (EF)
This switch combines the device connected and device closed information to produce circuitclosed information. The connected/closed switch (EF) is supplied as an option and must be used withan additional auxiliary switch (OF) and fits into its connector (it is not available for ring terminals).
Cradle Position Switch
Three series of optional auxiliary switches are available for the cradle:
Cradle position switches (CE) to indicate the connected position.
Cradle position switches (CD) to indicate the disconnected position. This position is indicated whenthe required clearance for isolation of the power and auxiliary circuits is reached.
Cradle position switches (CT) to indicate the test position. In this position, the power circuits aredisconnected and the auxiliary circuits are connected.
Connected/ClosedSwitch (EF)
Table 20: Connected/Closed Switch Characteristics
Circuit Breaker Type NW
Maximum Number of Contacts 8a/8b Form C
Breaking Capacity at aPower Factor (p.f.) of 0.3
Standard: 100 mA/24 V Minimum Load Low-Level: 2 mA/15 V Minimum Load
240/380 Vac 6 A 24/48 Vac 5 A
480 Vac 6 A 240 Vac 5 A
600/690 Vac 6 A 380 Vac 5 A
24/48 Vdc 2.5 A 24/48 Vdc 2.5 A
125 Vdc 0.8 A 125 Vdc 0.8 A
250 Vdc 0.3 A 250 Vdc 0.3 A
Cradle PositionSwitch (CE, CD, CT)
Actuator for Up To ThreeCE Switches (Standard)
Actuator for Up To ThreeCD Switches (Standard)
Actuator for Up To ThreeCT Switches (Standard)
Table 21: Cradle Position Switch Characteristics
Circuit Breaker TypeNW Possible Ring-Terminal Combinations
CE CD CT CE CD CT
Maximum Push-In Switches withStandard Actuators
3 3 3
1b 1a 1b
1b 1a, 1b 1b
1a, 2b 1a, 2b 1a
With Additional Actuators
9 0 0 1a, 2b 2a, 1b 1b
6 3 0 2a, 1b 1a, 2b 1b
3 6 0 1a 1a 1a
6 0 3 3a 3a 1a
BreakingCapacity at aPower Factor(p.f) of 0.3
Standard (100 mA/24 V minimum load) 3b 3b 1b
Vac
240 8 AAdditional Actuators for Cradle
Position Switches on Masterpact NW
Circuit Breakers
A set of additional actuators may be
installed on the cradle to change or addthe functions of the cradle positionswitches. Each standard actuator can bereplaced by any other actuator tochange the function of the cradleposition switch.
380 8 A
480 8 A
600/690 6 A
Vdc
24/48 2.5 A
125 0.8 A
250 0.3 A
Low Level (2 mA/15 V minimum load)
Vac
24/48 5 A
240 5 A
380 5 A
Vdc
24/48 2.5 A
125 0.8 A
250 0.3 A
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Cradle Connections
Table 22: MasterpactNW UL Listed Circuit Breaker Connectors (Rear Connections)
Type RatingConnector
Drawout Circuit Breaker Fixed Circuit Breaker
Rear-ConnectedT Vertical
(RCTV)
8002500 A
30004000 A
Rear-ConnectedT Horizontal
(RCTH)
8002500 A
30004000 A
06135588
06135594
06135589
06135595
06
135590
06
135596
06135591
06135597
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Masterpact NW DC Circuit BreakersAccessories
Table 23: Masterpact NW IEC Rated 3P/4P Drawout Circuit Breakers
Wiring Connector Type Ampere Rating Connector and Bussing
Version C (3P)RCTV
10002000 A
4000 A
RCTH10002000 A
4000 A NA
Continued on next page
06135554
06135560
1
06135561
06135562
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Version D (3P)RCTV
10002000 A
4000 A
RCTH10002000 A
4000 A NAContinued on next page
Table 23: Masterpact NW IEC Rated 3P/4P Drawout Circuit Breakers(continued)
Wiring Connector Type Ampere Rating Connector and Bussing
06135555
06135566
06135567
06135568
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Masterpact NW DC Circuit BreakersAccessories
Version E (4P)RCTV
10002000 A
4000 A
RCTH10002000 A
4000 A NA
Table 23: Masterpact NW IEC Rated 3P/4P Drawout Circuit Breakers(continued)
Wiring Connector Type Ampere Rating Connector and Bussing
06135552
06135572
06135573
06135571
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Table 24: Masterpact NW IEC Rated 3P/4P Fixed Circuit Breakers
WiringConnector
Type
Ampere
RatingConnectors and Bussing
Version C (3P)
RCTV
10002000 A
4000 A
RCTH10002000 A
4000 A NA
Continued on next page
06135553
06135557
06135558
06135559
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Masterpact NW DC Circuit BreakersAccessories
Version D (3P)
RCTV
10002000 A
4000 A
RCTH10002000 A
4000 A NA
Continued on next page
Table 24: Masterpact NW IEC Rated 3P/4P Fixed Circuit Breakers(continued)
WiringConnector
Type
Ampere
RatingConnectors and Bussing
06135555
06135563
06135564
06135565
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Version E (4P)
RCTV
10002000 A
4000 A
RCTH10002000 A
4000 A NA
Table 24: Masterpact NW IEC Rated 3P/4P Fixed Circuit Breakers(continued)
WiringConnector
Type
Ampere
RatingConnectors and Bussing
06135556
06135569
06135570
06135571
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Masterpact NW DC Circuit BreakersAccessories
Circuit Breaker Locking and Interlocking
Push Button Lock
A transparent cover blocks access to thepush buttons used to open and close the
device. It is possible to independently lockthe opening button and/or the closing button.The push buttons may be locked using:
One to three padlocks: 3/165/16 in.diameter, not supplied
A lead seal
Two screws
Open Position Padlock and Key Lock Provisions
The circuit breaker is locked in the off position by physically keeping the opening push button presseddown using one of the following:
One to three padlocks: 3/165/16 in. diameter, not supplied
Key locks: One or two Kirkor Federal Pioneerkey locks (keyed alike or differently) are availablefor ULListed/ANSI Certified circuit breakers; for IEC Rated circuit breakers, Ronis, Castell, orProfalux key locks are available
Keys may be removed only when locking is effective. The key locks are available in any of thefollowing configurations:
One key lock
One key lock mounted on the device + one identical key lock supplied separately for interlockingwith another device
Two different key locks mounted on the circuit breaker for double locking
A locking kit for installation of one or two key locks may be ordered separately.
Cradle Locking and Interlocking
Disconnected Position Locking
The circuit breaker can be locked in the disconnected position by key interlock (optional) or padlock(standard). The key interlock is on the cradle and accessible with the door locked.
Key interlock, Kirk or Federal Pioneer are available for UL/ANSI circuit breakers; for IEC circuitbreakers, Ronis, Castell, or Profalux key locks are available. Captive key when unlocked.
Locking on disconnected, test, and connected positions is optional for IEC circuit breakers andstandard for UL/ANSI circuit breakers.
push OFFO Ipush ON
06133463
06133462
Push Button Lock
Open Position KeyLock
Open Position PadlockProvision
Table 25: Circuit Breaker and Switch Locking Options
Type of Locking Maximum Number of Locks
Pushbutton Locking Using padlocks Three padlocks
Open Position LockingUsing key locks Two key locks (optional)
Using padlocks and key locks Up to three padlocks and two key locks (optional)
Tes t0
6133464
Key Interlock
Padlock Hasp
Disconnected PositionLocking Provisions
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Masterpact NW DC Circuit BreakersAccessories
Open Door Racking Interlock
The racking interlock prevents racking in the circuit breaker when the door is open. (Insertion of thecircuit breaker racking crank is not possible when the compartment door is open.)
Automatic Spring Discharge Mechanism
The automatic spring discharge mechanism is standard for UL and ANSI circuit breakers, and optionalfor IEC circuit breakers. It releases the closing spring energy when the circuit breaker is moved fromthe disconnected position to the fully withdrawn position.
Cradle Rejection Kits
The cradle rejection feature (standard) ensures that only the properly designated circuit breaker orswitch is matched with the selected cradle assembly.
Rail Padlocking
Rail padlocking is standard for UL, ANSI, and IEC cradles. When used in combination with thedisconnected position locking device, rail padlocking prevents the movement of the circuit breaker from
the disconnected position to the fully withdrawn position when the padlock hasp is pulled out and locked.
Miscellaneous Accessories
Mechanical Operation Counter (CDM)
The mechanical operation counter (CDM) registers the total number of operating cycles. One CDM isinstalled per circuit breaker.
06133790
Open Door RackingInterlock
06133802
Automatic SpringDischarge Mechanism
Figure 11: Cradle Rejection Kits
Cradle Rejection KitContents
00399
06133798
Mechanical OperationCounter (CDM)
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Shutter and Shutter Lock
The shutters automatically block access to themain disconnects when the circuit breaker is in thedisconnected, test, or fully withdrawn position. Theshutter lock is used to prevent connection of the
circuit breaker or to lock the shutters in the closedposition.
Door Escutcheon (CDP)
These door escutcheons provide a frame and seal for the circuit breaker.
Transparent Cover (CCP) for Door Escutcheon
The cover is hinged-mounted and locked with a milled head, and is designed to be installed on thedoor escutcheon.
Figure 12: Door Escutcheons
06133174
Shutter Lock
ULCircuit Breaker Shutter
06134065
Escutcheon
Seal
06133818
Escutcheon
Seal
Door Escutcheon (NW Drawout)Door Escutcheon (NW Fixed)
06133819
Transparent Cover (CCP)
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Masterpact NW DC Circuit BreakersWiring Diagrams
Section 4Wiring Diagrams
NOTE: All diagrams are showing circuit breaker open, connected and charged.
Figure 13: Wiring Diagrams for Masterpact NW Circuit Breakers
Markings for Push-In Type Terminals
Cell Switches Trip Unit Cell Switches
CD3 CD2 CD1 COM UC1 UC2 UC3 UC4 M2C/M6C SDE2/Res. SDE1 CE3 CE2 CE1
834 824 814 E5 E6 Z5 M1 M2 M3 F2+ V3 484/Q3 184/K2 84 334 324 314
832 822 812 E3 E4 Z3 Z4 T3 T4 VN V2 474/Q2 182 82 332 322 312
831 821 811 E1 E2 Z1 Z2 T1 T2 F1 V1 471/Q1 181/K1 81 331 321 311
or
CE6 CE5 CE4
364 354 344
362 352 342
361 351 341
Markings for Ring Terminals
Cell Switches Trip Unit
CD3 CD2 CD1 COM UC1 UC2 UC3 UC3a M2C/M6C M2Ca/M6Ca SDE2/Res. SDE2a SDE1 SDE1a
834/832 824/822 814/812 E5 E6 Z5 M1 M2 M3 F2 VN 484/Q3 474/Q2 184/K2 182 84 82
831 821 811 E3 E4 Z3 Z4 T3 T4 F1 471/Q1 181/K1 81
E1 E2 Z1 Z2 T1 T2
822
824
821
812
814
811
832
834
831
CD3
Disconnected
CD2 CD1
331
332
334
CE3
Connected
321
322
324
CE2
311
312
314
CE1
914
912
911
924
922
921
CT3
934
932
931
CT2 CT1
Test Position06133068
Trip Unit Cell Switches
Trip Unit
= Not available on this circuit breaker
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Masterpact NW DC Circuit BreakersWiring Diagrams
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NOTE: All diagrams are showing circuit breaker open, connected and charged.
Figure 14: Wiring Diagrams for Auxiliary Connections
Markings for Push-In Type Terminals
Remote Operation Auxiliary Switches Cell Switches
MN/MX2 MX1 XF PF MCH OF24 OF23 OF22 OF21 OF14 OF13 OF12 OF11 OF4 OF3 OF2 OF1 CT3 CT2 CT1
D2/C12 C2 A2 254 B2 244 234 224 214 144 134 124 114 44 34 24 14 934 924 914
C13 C3 A3 252 B3 242 232 222 212 142 132 122 112 42 32 22 12 932 922 912
D1/C11 C1 A1 251 B1 241 231 221 211 141 131 121 111 41 31 21 11 931 921 911
or or or
EF24 EF23 EF22 EF21 EF14 EF13 EF12 EF11 CD6 CD5 CD4
248 238 228 218 148 138 128 118 864 854 844
246 236 226 216 146 136 126 116 862 852 842
245 235 225 215 145 135 125 115 861 851 841
or
CE9 CE8 C7
394 384 374
392 382 372
391 381 371
Markings for Ring Terminals
Remote Operation Auxiliary Switches Cell Switches
MN MX1 MX1a XF XFa PF CT1 MCH MCHa OF14 OF13 OF12 OF11 OF4 OF3 OF2 OF1 CE3 CE2 CE1
D2 C2 C3 A2 A3 252 914/912 B2 B3 144 134 122 112 44 34 22 12 334/332 324/322 314/312
D1 C1 A1 251 911 B1 141 131 121 111 41 31 21 11 331 321 311
OF..
Closed
ConnectedClosed
EF(OF..+CE)
Not Connectedor Connectedand Open
or
..1
..8
..6
..5
12
14
11
22
24
32
34
31
21
OF4
42
44
41
OF3 OF2 OF1
Open Closed
06133065
..2
..4
oror
181
182
184
SDE2
Fault
Fault
81
82
84
SDE1
K2
RES
K1
PF
252
254
251
Charged
MX1
C2
C3
C1
A2
A3
A1
XF
D2
D1
CHMN MX2
C12
C11
B1
MCH
B3
B2
06133066
SwitchesRemote Operation
A
AWhen remote operation features are used, make sure there is a minimum of four seconds for the spring charging motor (MCH) to completely charge the circuitbreaker closing springs prior to actuating the shunt close (XF) device.
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Masterpact NW DC Circuit BreakersWiring Diagrams
Additional Wiring Information
Alarm Contacts (OF1, OF2, OF3 and OF4 are standard equipment) Cradle Contacts
OF4
OF3
OF2OF1
Open/Closed Circuit Breaker or
Switch Position Contacts
OF24: Open/Closed Circuit Breaker or SwitchPosition Contact
orEF24: Combined Connected and Closed Contact
CD3
CD2
CD1
Disconnected
Position Contacts
CE3
CE2
CE1
ConnectedPosition
Contacts
CT3
CT2
CT1
Test Position
Contacts
OF23 or EF23 or or
OF22 or EF22 CE6
CE5
CE4
ConnectedPosition Contacts
CE9
CE8
CE7
ConnectedPositionContacts
OF21 or EF21
OF14 or EF14
OF13 or EF13 or
OF12 or EF12 CD6
CD5
CD4
DisconnectedPositionContacts
OF22 or EF22
OF11 or EF11
Remote Operation
SDE Electrical Fault Alarm Contact
RES Remote Reset
MN Undervoltage Trip Device
MX Shunt Trip
XF Shunt Close
PF Ready-to-Close Contact
MCH Spring-Charging Motor
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Section 5Dimensional Drawings
Enclosure Information
UL 3P Drawout Circuit Breakers
Table 26: Minimum Enclosure Information
Number
of PolesCircuit Breaker
Circuit Breaker Enclosure Dimensions Ventilation Area
(H x W x D) Top Bottom Front Face
in. mm in.2 mm2 in.2 mm2 in.2 mm2
3P ULListed 18.37 x 30.00 x 15.75 466.6 x 762.0 x 400 16.62 10 720 16.62 10 720
Figure 15: 8002500 A Master Drawing
06135608
Dimensions: in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
Figure 16: 8002500 A Rear-Connected "T" Vertical (RCTV)
Figure 17: 8002500 A Rear Connected "T" Horizontal (RCTH)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Figure 18: 30004000 A Rear Connected "T" Horizontal (RCTV)
Dimensions:in.mm
Figure 19: 30004000 A Rear Connected "T" Horizontal (RCTH)
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
Figure 20: Drawout Cradle Mounting
Figure 21: Door Cutout
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Figure 22: Door Escutcheon Hole Pattern
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
UL 3P Fixed Circuit Breakers
Figure 23: 8004000 A Master Drawing
06135609
Dimensions:in.mm
Figure 24: 8002500 A Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Figure 25: 8002500 A Rear Connected "T" Horizontal (RCTH)
Dimensions:in.mm
Figure 26: 30004000 A Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
Figure 27: 30004000 A Rear Connected "T" Horizontal (RCTH)
Dimensions:in.mm
Figure 28: Door Cutout Figure 29: Circuit Breaker Mounting
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
Figure 31: 10002000 A Version C Rear Connected "T" Horizontal (RCTH)
Figure 32: 4000 A Version C Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Figure 33: 10002000 A Version D Rear Connected "T" Vertical (RCTV)
Figure 34: 10002000 A Version D Rear Connected "T" Horizontal (RCTH)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
Figure 35: 4000 A Version D Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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IEC 4P Drawout Circui\t Breakers
Figure 36: 10002000 A Version E Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
Figure 37: 10002000 A Version E Rear Connected "T" Horizontal (RCTH)
Figure 38: 4000 A Version E Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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IEC 3P Fixed Circuit Breakers
Figure 39: 10002000 A Version C Rear Connected "T" Vertical (RCTV)
Figure 40: 10002000 A Version C Rear Connected "T" Horizontal (RCTH)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Figure 43: 10002000 A Version D Rear Connected "T" Horizontal (RCTH)
Figure 44: 4000 A Version D Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersDimensional Drawings
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Figure 46: 10002000 A Version E Rear Connected "T" Horizontal (RCTH)
Figure 47: 4000 A Version E Rear Connected "T" Vertical (RCTV)
Dimensions:in.mm
Dimensions:in.mm
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Masterpact NW DC Circuit BreakersTrip Curves
Section 6Trip Curves
Figure 48: Trip Curves MicrologicDC1.0 Instantaneous Protection, U = 500 Vdc, L/R = 5 ms (IEC) or 8 ms (UL)
06135653
N (IEC)N (UL)
12502500 A Sensors
N (IEC)
0613565
4
N (UL)
25005400 A Sensors
N (IEC)N (UL)
06135655
500011000 A Sensors
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Masterpact NW DC Circuit BreakersTrip Curves
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Figure 49: Trip Curves Micrologic DC1.0 Instantaneous Protection, U = 750/900 Vdc, L/R = 5 ms
06135656
06135657
06135658
12502500 A Sensors 25005400 A Sensors
500011000 A Sensors
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Masterpact NW DC Circuit BreakersTrip Curves
Figure 50: Trip Curves Micrologic DC1.0 Instantaneous Protection, U = 500 Vdc, L/R = 15 ms
06135533
12502500 A Sensors
06135534
25005400 A Sensors
06135533
500011000 A Sensors
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Masterpact NW DC Circuit BreakersTrip Curves
Figure 52: Trip Curves Micrologic DC1.0 Instantaneous Protection, U = 500 Vdc, L/R = 30 ms
06135659
12502500 A Sensors
06135660
25005400 A Sensors
06135661
500011000 A Sensors
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Figure 53: Trip Curves Micrologic DC1.0 Instantaneous Protection, U = 750/900 Vdc, L/R = 30 ms
06135662
06135663
06135664
12502500 A Sensors 25005400 A Sensors
500011000 A Sensors
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Masterpact NW DC Circuit BreakersSelection
Section 7Selection
Introduction
Overview of Selection Procedure
1. Select the completely assembled circuit breaker (circuit breaker frame plus trip unit):
The frame ampere rating required
The system voltage
The interruption rating required
The grounding system
The connections
2. Select circuit breaker frame options, if required.
3. Select cradle options, if required.
Factory-Assembled Circuit Breakers and Switches
Table 27: Circuit Breaker Accessory Options
Accessories Available for the Circuit Breaker and Cradle
Shunt close Key locks for circuit breaker and cradle
Shunt trip Padlock attachment (circuit breaker + cradle)
Undervoltage trip Mechanical interlocks
Fixed time delay Cradle position switches
Adjustable time delay Door interlock
Spring-charging motor Operations counter
Auxiliary contacts (standard) Safety Shutter
Ready-to-close contact Cradle rejection kit (standard)
Overcurrent trip switch (standard) Rail Padlocking
Rack in interlock
Table 28: UL 489 Listed Circuit Breakers
Frame Rating (A) Model NumberInterrupting Rating
600 Vdc unloaded (500 Vdc loaded)
800 NW08N
35 kA
1200 NW12N
1600 NW16N
2000 NW20N
2500 NW25N
3000 NW30N
4000 NW40N
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Switch Selection
Table 29: IEC 60947-2 Rated Circuit Breakers
Frame
Rating
(A)
Model
Number
Interrupting Rating
L/R 5 ms L/R 15 ms L/R 30 ms
500 Vdc 750 Vdc 900 Vdc 500 Vdc 750 Vdc 900 Vdc 500 Vdc 750 Vdc 900 Vdc
1000 NW10N 85 kA 35 kA 25 kA
NW10H 100 kA 85 kA 85 kA 85 kA 50 kA 35kA 50 kA 50 kA 25 kA
2000NW20N 85 35 kA 25
NW20H 100 kA 85 kA 85 kA 85 kA 50 kA 35 kA 50 kA 50 kA 25 kA
4000NW40N 85 35 kA 25
NW40H 100 kA 85 kA 85 kA 85 kA 50 kA 35 kA 50 kA 50 kA 25 kA
Table 30: IEC 60947-3 Rated, Non-Automatic Switch
Frame Rating (A) Model Number Making Capacity Icm Withstand Current Icw (1 s)
1000 NW10HA 85 kA 85 kA
2000 NW20HA 85 kA 85 kA
4000 NW40HA 85 kA 85 kA
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Masterpact NW DC Circuit BreakersSelection
REQUEST FOR QUOTATION FORM Page 1 of 2
For faster quote processing, please use the following request for quotation form. For each section, check the applicable box or enter values corresponding to yourchoice. Note: this request for quotation form does not take into account incompatibilities. Order to be placed on CSSS.
Date Customer Name: RFQ No.:
From Location Account No.: Q2C No.:Phone No. Fax No. Contact Name: Phone No.:
Messages Location: Fax No.:
UL Listed Circuit Breaker Qty Cradle Secondary Disconnects
Masterpact Type
NW08 Choose one:
NW12 Push-In Terminal (standard)
NW16 Ring Terminal (UL option only)
NW20
NW25 Accessories for Remote Operation
NW30 Spring-Charging Motor (MCH _____ V ac
NW40 _____ V dc
Circuit Breaker Interruption Rating N only available Shunt Close (XF) _____ V ac
Type of Sensor
1250 to 2500 A _____ V dc
2500 to 5400 A Shunt Trip (MX1) _____ V ac
5000 to 11000 A _____ V dc
Load Connection Version C only available Additional Shunt Trip (MX2) _____ V ac
Type of EquipmentFixed OR _____ V dc
Drawout chassis Undervoltage Trip (MN) choose one
Type of ConnectionVertical Top Bottom Instantaneous _____ V ac
Horizontal Top Bottom _____ V dc
Fixed-time delay _____ V ac
IEC Rated Circuit Breaker or Switch Disconnector Qty _____ V dc
Masterpact Type
NW10 Adjustable-time delay _____ V ac
NW20 _____ V dc
NW40 Electrical closing push button (BPFE)
Circuit Breaker Interruption Rating N, H Remote reset after fault trip (RES) 100130 Vac
Switch-Disconnector Interruption Rating HA (incompatible with SDE2) 200240 Vac
Type of Sensor
1250 to 2500 A Wiring for Cradle (Complete only if ordering cradle without circuit breaker)
2500 to 5400 A Wiring for additional overcurrent trip switch (SDE2) or electrical reset (RES)
5000 to 11000 A Wiring for undervoltage trip (MN) or additional shunt trip (MX2)
Load Connection C, D, E (Wiring for shunt trip (MX), shunt close (XF) and spring-charging motor (MCH)
Type of EquipmentFixed Wiring for ready-to-close contact (PF)
Drawout Wiring for four additional form C auxiliary switches (push-in terminals) or
2a+2b auxiliary switches (ring terminals (OF)Type of Connection
Vertical Top Bottom
Horizontal Top Bottom Wiring for eight additional form C auxili9ary switches (Push-in terminals) (OF)
Manufacturing Numbers Provided with Quotation
Circuit Breaker:
Cradle:
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REQUEST FOR QUOTATION FORM Page 2 of 2
Auxiliary, Alarm and Cradle Position Switches Cradle Interlocking and Accessories
Auxiliary Switch (OF)
Choose one:
Door interlock
Push-in type terminal or Ring terminal Racking interlock between racking crank and Off position
4a/4b form C (std.) 2a + 2b std on UL, check for IEC
8a/8b form C 4a + 4b Open door racking interlock
12A/12B form C Automatic spring discharge std on UL, check for IEC
Overcurrent trip switches Cradle rejection kit standard
Standard (1a/1b form C) (SDE1) standard Terminal Shield
Additional overcurrent trip switches (choose one) Miscellaneous Accessories
1a/1b form C) (incompatible with RES) (SDE2) Mechanical operation counter
(1a/1b form C) (incompatible with RES) (low-level (SDE2) Shutter
Ready-to-close switch (PF) Std low-level Shutter with padlock provision and position indicator
Push-in type cradle position switches (1a/1b form C) Transparent cover w/ door escutcheon (drawout circuit breaker only
Connected position (max. qty.: 3 qty __ Locking and Interlocking Cradle Brkr.
Test position (max. qty.: 3) qty __ Padlockable push button cover
Disconnected position (max. qty.: 3) qty __ Padlock provision only Std
Low-level cradle position switch One key lock
Choose one: Qty. (Select manufacturer below)
Connected/CLosed switch (max. qty.: 8) (EF) ______ Two key locks keyed alike
Connected/CLosed switch (max. qty.: 8) (low-level EF) ______ (Select manufacturer below)
Ring terminal type cradle position switches (1a or 1b contact) Two key locks keyed differently
Connected position (max. 3a or 3b) qty/type ___________ (Select manufacturer below)
Test position (max. 1a or 1b) qty/type ___________ Key lock manufacturer
Disconnected position (max. 3a or 3b) qty/type ___________ Kirk Ronis
Federal Pioneer Profalux Castell
Manufacturing Number (provided with quotation)
List Price
Circuit Breaker: $
Cradle: $ Delivery (from receipt of order)
Total $
Delivery Schedule
Circuit Breaker and cradle to be shipped together
Cradle to be shipped prior to circuit breaker
Schneider Electric Conditions of Sale Apply
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