MasterPact™ Circuit Breakers
Introduction
800–1600 A MasterPact NT Drawout Circuit Breaker
MasterPact™ NT/NW Universal Power Circuit Breakers are designed to protect electrical systems from damage caused by overloads, short circuits and equipment ground faults. All MasterPact circuit breakers are designed to open and close a circuit manually, and to open the circuit automatically at a predetermined overcurrent setting. MasterPact circuit breakers can also:
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Enhance coordination by their adjustability.
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Provide integral ground-fault protection for equipment.
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Provide high interrupting ratings and withstand ratings.
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Provide communications.
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Provide power monitoring.
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Provide protective relaying functions.
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Provide zone-selective interlocking (ZSI) which can reduce damage in the event of a fault.
MasterPact NW Drawout Circuit Breakers |
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800–3200 A MasterPact NW Drawout Circuit Breaker |
4000–6300 A MasterPact NW Drawout Circuit Breaker |
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Codes and Standards
MasterPact circuit breakers are manufactured and tested in accordance with the following standards:
| Low-Voltage Power Circuit Breaker | Insulated Case Circuit Breaker | IEC Rated Circuit Breaker | IEC Extreme Atmospheric Conditions |
|---|---|---|---|
| ANSI C37.13 ANSI C37.16 ANSI C37.17 ANSI C37.50 UL 1066 (cULus Listed) NEMA SG3 |
UL 489 (UL Listed) NEMA AB1 CSA C22.2 No. 5 NMX J-266-ANCE |
IEC 60947-2 IEC 60947-3 |
IEC 68-2-1: Dry cold at –55°C IEC 68-2-2: Dry heat at +85°C IEC 68-2-30: Damp heat (temp. +55°C, rel. humidity 95%) IEC 68-2-52 Level 2: Salt mist |
The 800–2000 A ANSI Low Voltage Power Circuit Breakers type L1F and Insulated Case Circuit Breaker type LF are tested to show the arc flash hazard risk category as referenced by NFPA® 70E.
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™ or Schneider Electric™ brands.
UL File Numbers:
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MasterPact NW: E161835 Vol. 2 Sec. 1
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MasterPact NT: E161835 Vol. 2 Sec. 2
Features and Benefits
High Ampere Interrupting Rating (AIR): ANSI Certified MasterPact NW circuit breakers have an interrupting rating of 200,000 A at 508 Vac without fuses.
High Short-Time Current Rating: MasterPact NW circuit breakers have exceptional short-time ratings—up to 100,000 A.
100% Rated Circuit Breaker: MasterPact circuit breakers are designed for continuous operation at 100% of their current rating.
Reverse Fed Circuit Breaker: MasterPact circuit breakers can be fed either from the top of the circuit breaker or from the bottom.
Two-Step Stored Energy Mechanism: MasterPact circuit breakers are operated via a stored-energy mechanism which can be charged manually or by a motor. The closing time is less than five cycles. Closing and opening operations can be initiated by remote control or by push buttons on the circuit breaker front cover. An O–C–O cycle is possible without recharging.
Drawout or Fixed Mount, 3-Pole (3P) or 4-Pole (4P) Construction: ANSI Rated, UL Listed and IEC Rated MasterPact circuit breakers are available in drawout or fixed mounts, with either three-pole or four-pole construction.
Field-Installable Trip Units, Sensor Plugs and Accessories: Trip units, sensor plugs and most accessories are field installable with only the aid of a screwdriver and without adjusting the circuit breaker. The uniform design of the circuit breaker line allows most accessories 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 truly representative of the status of all the main contacts.
Segregated Compartment: Once the accessory cover has been removed to provide access to the accessory compartment, the main contacts remain fully isolated. Furthermore, interphase partitioning allows 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 an option) are located on a connecting block which is accessible from the front in the connected, test and disconnected positions. This is particularly useful for field inspection and modification.
Anti-Pumping Feature: All MasterPact NT and NW circuit breakers are designed with an anti-pumping feature that causes an opening order to always takes priority over a closing order. Specifically, if opening and closing orders occur simultaneously, the charged mechanism discharges without any movement of the main contacts keeping the circuit breaker in the open (OFF) position.
In the event that opening and closing orders are simultaneously maintained, the standard mechanism provides 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 electrical controls and with the closing coil continuously energized) the circuit breaker cannot be closed until the power supply to the closing coil is discontinued and then reactivated.
Disconnection Through the Front Door: The racking handle and racking mechanism are accessible through the front door cutout. Disconnecting the circuit breaker is possible without opening the door and exposing live parts.
Racking Handle and Mechanism |
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Disconnected Position (Cluster Shield Not Shown) |
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Drawout Mechanism: The drawout assembly mechanism allows the circuit breaker to be racked in four positions (connected, test, disconnected, or withdrawn), as shown in the figure below.
Racking Positions (Cluster Shield Not Shown) |
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Connected Position |
Test Position |
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Disconnected Position |
Withdrawn Position |
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Maintenance: To maintain MasterPact's operating and safety characteristics from the beginning to the end of its service life, Schneider Electric recommends that systematic checks and periodic on-site maintenance be carried out by qualified personnel, as indicated in bulletin 0613IB1202, "Maintenance and Field Testing Guide for MasterPact NT and NW Circuit Breakers".
Schneider Electric Field Services offers a wide portfolio of field maintenance services named ONSITE MAINTENANCE which offers four types of services:
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OnSite Repair, which repairs a system in view of fulfilling a required function
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OnSite Preventive Maintenance, which carries out, at predetermined intervals, checks intended to reduce the probability of a failure or deterioration in the operation of a system
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Onsite Condition Maintenance, based on the recording and analysis of system parameters in addition to preventive checks, detects drift from the initial state and/or significant trends in performance. Using OnSite Condition Maintenance makes it possible to anticipate any necessary corrective action required to ensure equipment safety and continuity of service, and make repairs immediately if spare parts are onsite, or to plan the repair for a more convenient time.
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On-Site Asset Diagnostic, which is used to identify symptoms of malfunction or degradation before problems occur, things not possible to detect during standard preventive maintenance. It detects functional deviations versus original (new device) specifications. A repair plan is recommended to recover the original conditions when deviations are diagnosed.
The Maintenance Guide is available on the Internet (www.se.com) and provides detailed information on:
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types of maintenance required, depending on the criticality of the protected circuit, risks involved if the component ceases to operate correctly,
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what is understood by the terms normal, improved and severe environment and operating conditions,
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periodic preventive maintenance operations that should be carried out under normal environment and operating conditions as well as the level of competence required for the operations,
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the environment and operating conditions that accelerate device aging,
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the recommended timing of on-site maintenance according to equipment criticality and the environmental conditions in which the equipment operates.
Arc Chamber
An example of preventive maintenance: the arc chambers are removed to allow visual inspection of the contacts and wear indicator groove (see Contact Wear Indicators for how wear is indicated). The operation counter can also indicate when inspections and possible maintenance should be done. The life of the circuit breaker may be extended by replacing the arc chamber and/or spring-charging motor of ANSI Certified circuit breakers. See bulletin 0613IB1202, available at www.se.com, for information on normal and adverse operating conditions.
Ambient Temperature:
MasterPact circuit breakers can operate under the following temperature conditions:
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The electrical and mechanical characteristics are stipulated for an ambient temperature between -13°F (25°C) and 158°F (70°C).
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Mechanical closing of the circuit breaker (by pushbutton) is possible down to -31°F (-35°C) and at an altitude up to +13,000 ft. (3900 m).
MasterPact circuit breakers have been tested for operation in industrial atmospheres. It is recommended that the equipment be cooled or heated to the proper operating temperature and kept free of excessive vibration and dust. Operation at temperatures above 104°F (40°C) may require derating or overbussing the circuit breaker. See the appropriate instruction bulletin and Temperature Correction Factors of this catalog for additional information.
Storage Temperature
Circuit breakers with trip units without LCD displays may be stored in the original packaging at temperatures between -40°F (-40°C) and 185°F (85°C).
For circuit breakers with trip units with LCD displays, this range is -13°F (-25°C) to 185°F (85°C).
Altitude:
MasterPact circuit breakers are suitable for use at altitudes of 13,000 ft. (3900 m) and below. See Altitude Correction Factors per ANSI C37.20.1 par. 7.1.4.1 (Table 10) for altitude correction factors.
Vibration:
MasterPact circuit breakers meet IEC 60068-2-6 Standards for vibration.
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2 to 13.2 Hz and amplitude 0.039 in. (1 mm)
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13.2 to 100 Hz constant acceleration 0.024 oz. (0.7 g)
Humidity:
MasterPact circuit breakers have been tested to the following:
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IEC68-2-30—damp heat (temperature +55°C and relative humidity of 95%)
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IEC 68-2-52 level 2—salt mist
The materials used in MasterPact NT and NW circuit breakers will not support the growth of fungus and mold.
MasterPact NW Circuit Breaker Design
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| A |
Overcurrent Trip Switch (SDE1) |
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| B |
Circuit Breaker Communication Module |
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| C |
Overcurrent Trip Switch (SDE2) or Electric Reset |
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| D |
Cluster |
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| E |
Cradle Rejection Kit |
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| F |
Lifting Tab |
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| G |
Trip Connection to Overcurrent Trip Switch |
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| H |
Auxiliary Control Connection |
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| I |
Shunt Trip (MX2) or Undervoltage Trip Device |
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| J |
Arc Chamber |
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| K |
Shunt Trip (MX1) |
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| L |
Auxiliary Contact Connection |
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| M |
Two Blocks of Four Additional Switches (OF) or Combined “Connected,Closed” Switches (EF) |
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| N |
Block of Four Form C Auxiliary Contacts (OF) |
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| O |
Shunt Close (XF) |
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| P |
Ready-to-Close Contact (PF) |
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| Q |
Charging Handle |
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| R |
Spring-Charging Motor (MCH) |
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| S |
Closing Push Button |
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| T |
Opening Push Button |
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| U |
Operations Counter |
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| V |
Trip Unit |
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| W |
Accessory Cover |
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| X |
Open/Close Push Button Close (Lockable with Padlock) |
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| Y |
Faceplate |
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| Z |
Charged/Discharged Indicator |
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| AA |
Open/Close Indicator |
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| AB |
Push-to-Reset on Fault Trip |
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| AC |
Electrical Close Push Button (BPFE) |
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| AD |
Padlock Attachment |
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| AE |
Key Interlock |
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| AF |
Mounting Plate for Fixed Circuit Breaker |
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MasterPact NW Cradle Design
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| A |
Stop Release Button |
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| B |
Padlock Provision |
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| C |
Key Interlock |
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| D |
Door Interlock for Connected Device |
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| E |
Pull-Out Hand Grip |
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| F |
Rejection Feature |
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| G |
Primary Stabs (UL)/Clusters (IEC) |
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| H |
Lifting Tab |
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| I |
Cradle Back Mold |
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| J |
Position Indicating Contact Terminal Block |
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| K |
Overcurrent Trip Switch Terminal Block |
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| L |
Arc Chamber Cover |
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| M |
Tool Shield |
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| N |
Position Indicating Contact Terminal Block |
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| O |
Accessory Control Terminal Block |
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| P |
Auxiliary Contact Terminal Block |
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| Q |
Terminal Cover |
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| R |
Position Indicating Contact Terminal Block |
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| S |
Wiring Cover |
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| T |
Shutter |
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| U |
Racking Interlock for Open Door |
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| V |
Crank Storage Space |
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| W |
Racking Crank |
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| X |
Position Indicator |
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| Y |
Crank Insertion Opening |
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MasterPact NW with ArcBlock™ Technology
The MasterPact NW low-voltage power circuit breaker and insulated case circuit breaker are available with ArcBlok technology designed to mount in an ArcBlok drawout cradle.
The MasterPact NW with ArcBlok technology interfaces with the ArcBlok cradle to prevent arcing events by enclosing the phases at the primary connection of the cradle. If for any reason an arcing event happens, with the separation between phase to phase and phase to ground, the arc is extinguished in less than 12 ms to reduce arc flash energy.
The MasterPact NW with ArcBlok technology is tested as part of Arc Resistant Equipment to ANSI C37.20.7.
| A |
Terminal Cover |
MasterPact NW Circuit Breaker and Cradle with ArcBlok Technology |
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| B |
Lifting Flanges |
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| C |
Extension Rail Handle |
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| D |
Padlock Provision |
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| E |
Stop Release Button |
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| F |
Racking Handle Insertion Opening |
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| G |
Position Indicator |
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| H |
Racking Handle Storage Space |
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| I |
Fault Trip Reset Button |
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| J |
Trip Unit |
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| K |
Push to Open Button |
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| L |
Push to Close Button |
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| M |
Charging Handle |
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| N |
Faceplate |
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| O |
Accessory Cover |
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| P |
Cradle Date Code |
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| Q |
ArcBlok Shield (rotated for clarity) |
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MasterPact NT Circuit Breaker and Cradle Design
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| A |
Extension Rail Handle |
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| B |
Lifting Handle |
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| C |
Terminal Cover |
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| D |
Padlock Provision |
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| E |
Position Indicator |
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| F |
Racking Handle Insertion Opening |
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| G |
Stop Release Button |
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| H |
Racking Handle Storage Space |
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| I |
Lifting Tab |
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| J |
Fault Trip Reset Button |
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| K |
Trip Unit |
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| L |
Accessory Cover |
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| M |
Charging Handle |
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| N |
:Push-to-close” Button |
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| O |
“Push-to-open” Button |
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| P |
Faceplate |
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Ratings
Ratings for ANSI C37 Certified MasterPact NW Circuit Breakers 800–2000 A
| Frame Rating | 800/1600 A | 2000 A | ||||||||||
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| Interrupting Rating Code | N1 | H1 | H2 | H3 | L1** | L1F* | H1 | H2 | H3 | L1** | L1F* | |
| Interrupting Current (kAIR) | 254 Vac 50/60 Hz | 42 | 65 | 85 | 100 | 200 | 200 | 65 | 85 | 100 | 200 | 200 |
| 508 Vac 50/60 Hz | 42 | 65 | 85 | 100 | 200 | 200 | 65 | 85 | 100 | 200 | 200 | |
| 635 Vac 50/60 Hz | 42 | 65 | 85 | 85 | 130 | 130 | 65 | 85 | 85 | 130 | 130 | |
| Short-Time Withstand Current (kA) | Vac 50/60 Hz, 0.5 s | 42 | 65 | 85 | 85 | 30 | 22 | 65 | 85 | 85 | 30 | 22 |
| Built In Instantaneous Override (Peak kA ±10%) |
—* | —* | —* | 190 | 805 | 55 | — | — | 190 | 80 | 55 | |
| Close and Latch Ratings (Peak kA) | Vac 50/60 Hz | 90 | 150 | 90 | 90 | 55 | 50 | 150 | 90 | 90 | 55 | 50 |
| Tested to show arc flash hazard risk category as referenced by NFPA70E | — | — | — | — | — | Yes | — | — | — | — | Yes | |
| Breaking Time | 25 to 30 ms (with no intentional delay) 9 ms for L1 and L1F | |||||||||||
| Closing Time | 70 ms | |||||||||||
| Sensor Rating | 100–800 A 800–1600 A |
1000–2000 A | ||||||||||
| Endurance Rating (C/O Cycles) (with no maintenance) | Mechanical | 12,500 | 10,000 | |||||||||
| Electrical | 2800 | 1000 | ||||||||||
Ratings for ANSI C37 Certified MasterPact NW Circuit Breakers 3200–6000 A
| Frame Rating | 3200/4000 A* | 4000/5000/6000 A* | ||||||
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| Interrupting Rating Code | H1 | H2 | H3 | L1** | H2 | H3 | L1** | |
| Interrupting Current (kAIR) | 254 Vac 50/60 Hz | 65 | 85 | 100 | 200 | 85 | 100 | 200 |
| 508 Vac 50/60 Hz | 65 | 85 | 100 | 200 | 85 | 100 | 200 | |
| 635 Vac 50/60 Hz | 65 | 85 | 85 | 130 | 85 | 85 | 130 | |
| Short-Time Withstand Current (kA) | Vac 50/60 Hz, 0.5 s | 65 | 85 | 85 | 100 | 85 | 85 | 100 |
| Built In Instantaneous Override (Peak kA ±10%) |
— | — | 190 | 270 | — | — | 270 | |
| Close and Latch Ratings (Peak kA) | Vac 50/60 Hz | 150 | 90 | 90 | 90 | 170 | 170 | 90 |
| Tested to show arc flash hazard risk category as referenced by NFPA70E | — | — | — | — | — | — | — | |
| Breaking Time | ||||||||
| Closing Time | ||||||||
| Sensor Rating | 1600–4000 A | 2000–4000
A 2500–5000 A 3000–6000 A |
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| Endurance Rating (C/O Cycles) (with no maintenance) | Mechanical | 10,000 | 5000 | 5000 | ||||
| Electrical | 1000 | 1000 | 1000 | |||||
Ratings for ANSI C37 Certified MasterPact NW Non-Automatic Switches
| Frame Rating | 800 A | 1600 A | 2000 A | 3200 A | 4000 A | 5000 A | |
|---|---|---|---|---|---|---|---|
| Withstand Rating Code | HA | HA | HA | HA | HA | HA | |
| Breaking Capacity with External Relay (kA), 50/60 Hz | 254 Vac | 65 | 65 | 65 | 65 | 85 | 85 |
| 508 Vac | 65 | 65 | 65 | 65 | 85 | 85 | |
| 635 Vac | 65 | 65 | 65 | 65 | 85 | 85 | |
| Short-Time
Withstand Current (kA) Vac 50/60 Hz, 0.5 s |
65 | 65 | 65 | 65 | 85 | 85 | |
Ratings for ANSI C37 Certified MasterPact NW Automatic Switches
| Frame Rating | 800 A | 1600 A | 2000 A | 3200 A | 4000 A* | 5000 A | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Withstand Rating Code | HF | HC | HF | HC | HF | HC | HF | HC | HF | HC | HF | HC | |
| Breaking Capacity with External Relay (kA), 50/60 Hz | 254 Vac | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 |
| 508 Vac | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | |
| 635 Vac | 85 | 130 | 85 | 130 | 85 | 130 | 85 | 130 | 85 | 130 | 85 | 130 | |
| Short-Time Withstand Current (kA) 50/60 Hz, 1.5 s | 85 | 30 | 85 | 30 | 85 | 30 | 85 | 100 | 85 | 100 | 85 | 100 | |
Ratings for UL 489 Listed MasterPact NW Circuit Breakers
| Frame Rating | 800/1200/1600/2000 A | 2500/3000 A | 4000/5000/6000 A | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Interrupting Rating Code | N | H | L | LF | H | L | H | L | |
| Interrupting Current (kAIR) | 240 Vac 50/60 Hz | 65 | 100 | 200 | 200 | 100 | 200 | 100 | 200 |
| 480 Vac 50/60 Hz | 65 | 100 | 150 | 150 | 100 | 150 | 100 | 150 | |
| 600 Vac 50/60 Hz | 50 | 85 | 100 | 100 | 85 | 100 | 85 | 100 | |
| Short-Time Withstand Current (kA) | Vac 50/60 Hz, 0.5 s | 42* | 65* | 30** | 22 | 65 | 65 | 85 | 100 |
| Built-In Instantaneous Override (Peak kA ±10%) |
90 | 90 | 80** | 55 | 150 | 150 | 170 | 170 | |
| Close and Latch Ratings (Peak kA) | Vac 50/60 Hz | 90 | 90 | 55* | 50 | 90 | 90 | 90 | 90 |
| Tested to show arc flash hazard risk category as referenced by NFPA70E | — | — | — | Yes | — | — | — | — | |
| Breaking Time | 25 to 30 ms (with no intentional delay) 9 ms for L and LF | ||||||||
| Closing Time | 70 ms | ||||||||
| Sensor Rating | 100–250 A / 400–800 A / 600–1200 A / 800–1600 A / 1000–2000 A | 1200–2500 A / 1600–3000 A | 2000–4000 A / 2500–5000 A / 3000–6000 A | ||||||
| Endurance Rating (C/O Cycles) (with no maintenance) | Mechanical | 12,500* | 12,500* | 12,500* | 12,500* | 10,000 | 10,000 | 5000 | 5000 |
| Electrical | 2800* | 2800* | 2800* | 2800* | 1000 | 1000 | 1000 | 1000 | |
Ratings for UL 489 Listed MasterPact NW Automatic Switches
| Frame Rating | 800 A | 1200 A | 1600 A | 2000 A | 2500 A | 3000 A | 4000 A | 5000 A | 6000 A | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Withstand Rating Code | HF | HB | HF | HB | HF | HB | HF | HB | HF | HB | HF | HB | HF | HB | HF | HB | HF | HB | |
| Withstand Ratings* (kA) Vac, 50/60 Hz | 240 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 | 100 | 200 |
| 480 | 100 | 150 | 100 | 150 | 100 | 150 | 100 | 150 | 100 | 150 | 100 | 150 | 100 | 150 | 100 | 150 | 100 | 150 | |
| 600 | 85 | 100 | 85 | 100 | 85 | 100 | 85 | 100 | 85 | 100 | 85 | 100 | 85 | 100 | 85 | 100 | 85 | 100 | |
| Instantaneous
Override (Peak kA) |
90 | 80 | 90 | 50 | 90 | 80 | 90 | 80 | 150 | 150 | 150 | 150 | 170 | 170 | 170 | 170 | 170 | 170 | |
Ratings for IEC 60947-2 Rated MasterPact NW Circuit Breakers 800–2000 A
| Frame Rating | 800/1000/1250/1600 A | 2000 A | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interrupting Rating Code | N1 | H1 | H2 | L1 | H10 | N1 | H1 | H2 | H3 | L1 | H10 | ||
| Ultimate Breaking Capacity (kA) 50/60 Hz | Icu | 220/415 Vac | 42 | 65 | 100 | 150 | — | 42 | 65 | 100 | 150 | 150 | — |
| 440 Vac | 42 | 65 | 100 | 150 | — | 42 | 65 | 100 | 150 | 150 | — | ||
| 525 Vac | 42 | 65 | 85 | 130 | — | 42 | 65 | 85 | 130 | 130 | — | ||
| 690 Vac | 42 | 65 | 85 | 100 | — | 42 | 65 | 85 | 100 | 100 | — | ||
| 1150 Vac | — | — | — | — | 50 | — | — | — | — | — | 50 | ||
| Service Breaking Capacity | Ics | %Icu | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Short-Time Withstand Current (kA) | Icw | Vac 50/60 Hz, 1 s | 42 | 65 | 85 | 30 | 50 | 42 | 65 | 85 | 65 | 30 | 50 |
| Vac 50/60 Hz, 3 s | 22 | 36 | 50 | 30 | 50 | 22 | 36 | 75 | 65 | 30 | 50 | ||
| Built-In Instantaneous Override (Peak kA ±10%) | — | — | 190* | 80* | — | — | — | 190 | 150 | 80 | — | ||
| Rated making Current (Peak kA)50/60 Hz | Icm | 220/415 Vac | 88 | 143 | 220 | 330 | — | 88 | 88 | 220 | 330 | 330 | — |
| 440 Vac | 88 | 143 | 220 | 330 | — | 88 | 88 | 220 | 330 | 330 | — | ||
| 525 Vac | 88 | 143 | 187 | 286 | — | 88 | 88 | 187 | 286 | 286 | — | ||
| 690 Vac | 88 | 143 | 187 | 220 | — | 88 | 88 | 187 | 220 | 220 | — | ||
| 1150 Vac | — | — | — | — | 105 | — | — | — | — | — | 105 | ||
| Break Time | ms | 25 | 25 | ||||||||||
| Closing Time | ms | < 70 | < 70 | ||||||||||
| Endurance Rating (with no maint.) C/O Cycles x 1000 | Mechanical | 12.5 | 10 | ||||||||||
| Electrical 440 V | 10 | 10 | 10 | 3 | — | 8 | 8 | 8 | 3 | 3 | — | ||
| Electrical 1150 V | — | — | — | — | 0.5 | — | — | — | — | — | 0.5 | ||
Ratings for IEC 60947-2 Rated MasterPact NW Circuit Breakers 2500–6300 A
| Frame Rating | 2500/3200/4000 A | 4000B/5000/6300 A | ||||||
|---|---|---|---|---|---|---|---|---|
| Interrupting Rating Code | H1 | H2 | H3 | H10 | H1 | H2 | ||
| Ultimate Breaking Capacity (kA) 50/60 Hz |
Icu | 220/415 Vac | 65 | 100 | 150 | — | 100 | 150 |
| 440 Vac | 65 | 100 | 150 | — | 100 | 150 | ||
| 525 Vac | 65 | 85 | 130 | — | 100 | 130 | ||
| 690 Vac | 65 | 85 | 100 | — | 100 | 100 | ||
| 1150 Vac | — | — | — | 50 | — | — | ||
| Service Breaking Capacity | Ics | %Icu | 100% | 100% | 100% | 100% | 100% | 100% |
| Short-Time Withstand Current (kA) | Icw | Vac 50/60 Hz, 1 s | 65 | 85 | 65 | 50 | 100 | 100 |
| Vac 50/60 Hz, 3 s | 65 | 75 | 65 | 50 | 100 | 100 | ||
| Built-In Instantaneous Override (Peak kA ±10%) | — | 190 | 150 | — | — | 117 | ||
| Rated making Current (Peak kA)50/60 Hz | Icm | 220/415 Vac | 143 | 220 | 330 | — | 220 | 330 |
| 440 Vac | 143 | 220 | 330 | — | 220 | 330 | ||
| 525 Vac | 143 | 189 | 286 | — | 187 | 286 | ||
| 690 Vac | 143 | 189 | 220 | — | 187 | 220 | ||
| 1150 Vac | — | — | — | 105 | — | — | ||
| Break Time | ms | 25 | 25 | |||||
| Closing Time | ms | < 70 | < 80 | |||||
| Endurance Rating (with no maint.) C/O Cycles x 1000 |
Mechanical | 10 | 5 | |||||
| Electrical 440 V | 5 | 5 | 1.25 | — | 1.5 | 1.5 | ||
| Electrical 1150 V | — | — | — | 0.5 | — | — | ||
Ratings for IEC 60947-3 Rated MasterPact NW Switches
| Frame Rating | 800/1000/1250/1600 A | 2000 A | 2500/3200/4000 A | 4000B/5000/6300 A | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Withstand Rating Code* | NA | HA | HF | HA10 | HA | HF | HA10 | HA | HF | HA10 | HA | ||
| Rated Making Current (Peak kA) | Icm | 220/415 Vac, 50/60 Hz | 88 | 105 | 187 | — | 105 | 187 | — | 121 | 189 | — | 187 |
| 440
Vac, 50/60 Hz |
88 | 105 | 187 | — | 105 | 187 | — | 121 | 189 | — | 187 | ||
| 500/690 Vac, 50/60 Hz | 88 | 105 | 187 | — | 105 | 187 | — | 121 | 189 | — | 187 | ||
| 1150
Vac, 50/60 Hz |
— | — | — | 105 | — | — | 105 | 121 | — | 105 | — | ||
| Short-Time Withstand Current (kA) | Icw | Vac
50/60 Hz, 1 s |
42 | 50 | 85 | 50 | 50 | 85 | 50 | 50 | 85 | 50 | 85 |
| Ultimate Breaking Capacity (with external protection relay) (kA) | Icu | Maximum Delay 350 ms | 42 | 50 | 85 | 50 | 50 | 85 | 50 | 50 | 85 | 50 | 85 |
Ratings for ANSI C37 Certified MasterPact NT Circuit Breakers
| Frame Rating | 800 A | |
|---|---|---|
| Interrupting Rating Code | N1 | |
| Interrupting Current (kAIR) | 254 Vac 60 Hz | 42 |
| 508 Vac 60 Hz | 42 | |
| 635 Vac 60 Hz | N/A | |
| Short-Time Withstand Current (kA) | ac 60 Hz, 0.5 s | 42 |
| Built-In Instantaneous Override (Peak kA ±10%) | — | |
| Close and Latch Ratings (Peak kA) | ac 60 Hz | 90 |
| Tested to show arc flash hazard risk category as referenced by NFPA70E | — | |
| Breaking Time | 25 to 30 ms (with no intentional time delay) |
|
| Closing Time | < 50 ms | |
| Sensor Rating | 100 to 250 A / 400 to 800 A | |
| Endurance Rating (C/O Cycles) (with no maintenance) | Mechanical | 12,500 |
| Electrical | 2800 | |
Ratings for ANSI C37 Certified MasterPact NT Non-Automatic Switches
| Frame Rating | 800 A | |
|---|---|---|
| Withstand Rating Code | NA | |
| Short-Time Withstand Current Rating (kA) | Vac 50/60 Hz, 0.5 s | 42 |
| Breaking Capacity (with external protection relay) (kA) | 254/508/635 Vac, 60 Hz | 42/42/NA |
Ratings for UL 489 Listed MasterPact NT Circuit Breakers
| Frame Rating | 800 A | 1200 A | 1600 A* | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interrupting Rating Code | N | H | L1 | L | LF | N | H | L1 | L | LF | N | H | L1 | L | |
| Interrupting Current (kAIR) | 240
Vac, 60 Hz |
50 | 65 | 100 | 200 | 200 | 50 | 65 | 100 | 200 | 200 | 50 | 65 | 100 | 200 |
| 480
Vac, 60 Hz |
50 | 50 | 65 | 100 | 100 | 50 | 50 | 65 | 100 | 100 | 50 | 50 | 65 | 100 | |
| 600
Vac, 60 Hz |
35 | 50 | N/A | N/A | N/A | 35 | 50 | N/A | N/A | N/A | 35 | 50 | N/A | N/A | |
| Short-Time Withstand Current Rating (kA) | Vac 60 Hz, 0.5 s | 35 | 35 | 10 | 10 | 10 | 35 | 35 | 10 | 10 | 10 | 35 | 35 | 10 | 10 |
| Built-In Instantaneous Override (Peak kA ±10%) | 90 | 90 | 22 | 22 | 22 | 90 | 90 | 22 | 22 | 22 | 90 | 90 | 22 | 22 | |
| Close and Latch Ratings (Peak kA) | Vac 60 Hz | 55 | 55 | 22 | 22 | 22 | 55 | 55 | 22 | 22 | 22 | 55 | 55 | 22 | 22 |
| Tested to show arc flash hazard risk category as referenced by NFPA70E | — | — | — | — | Yes | — | — | — | — | Yes | — | — | — | — | |
| Breaking Time | 25
to 30 ms (with no intentional time delay) 9 ms for L and LF |
||||||||||||||
| Closing Time | < 50 ms | ||||||||||||||
| Sensor Rating | 100–250 A / 400–800 A | 600–1200 A | 800–1600 A | ||||||||||||
| Endurance Rating (C/O Cycles) (with no maintenance) | Mechanical | 12,500 | |||||||||||||
| Electrical | 2800 | ||||||||||||||
Ratings for UL 489 Listed MasterPact NT Automatic Switches
| Frame Rating | 800 A | 1200 A | 1600 A | ||||
|---|---|---|---|---|---|---|---|
| Withstand Rating Code | HF | HB | HF | HB | HF | HB | |
| Withstand Rating* (kA) Vac, 50/60 Hz | 240 | 65 | 200 | 65 | 200 | 65 | 200 |
| 480 | 50 | 100 | 50 | 100 | 50 | 100 | |
| 600 | 50 | NA | 50 | NA | 50 | NA | |
| Instantaneous Override (Peak kA) | 90 | 22 | 90 | 22 | 90 | 22 | |
Ratings for IEC 60947-2 Rated MasterPact NT Circuit Breakers
| Frame Rating | 800/1000 A | 1250/1600 A | |||||
|---|---|---|---|---|---|---|---|
| Interrupting Rating Code | H1 | H2 | L1 | H1 | H2 | ||
| Ultimate Breaking Capacity (kA) | Icu | 220/415 Vac, 50/60 Hz | 42 | 50 | 150 | 42 | 50 |
| 440 Vac, 50/60 Hz | 42 | 50 | 130 | 42 | 50 | ||
| 525 Vac, 50/60 Hz | 42 | 42 | 100 | 42 | 42 | ||
| 690 Vac, 50/60 Hz | 42 | 42 | 25 | 42 | 42 | ||
| 1000 Vac, 50/60 Hz | — | — | — | — | — | ||
| Service Breaking Capacity (kA) | Ics | %Icu | 100% | 100% | 100% | 100% | 100% |
| Short-Time Withstand Current (kA) | Icw | Vac 50/60 Hz, 1 s | 42 | 42 | 10 x In* | 42 | 36 |
| Built-In Instantaneous Override (kA ±10%) | — | 90 | 10* | — | — | ||
| Rated Making Capacity (Peak kA) | Icm | 220/415 Vac, 50/60 Hz | 88 | 105 | 330 | 88 | 105 |
| 440 Vac, 50/60 Hz | 88 | 105 | 286 | 88 | 105 | ||
| 525 Vac, 50/60 Hz | 88 | 88 | 220 | 88 | 88 | ||
| 690 Vac, 50/60 Hz | 88 | 88 | 52 | 88 | 88 | ||
| 1000 Vac, 50/60 Hz | — | — | — | — | — | ||
| Break Time | ms | 25 | 25 | 9 | 25 | 25 | |
| Closing Time | ms | 50 | 50 | 50 | 50 | 50 | |
| Endurance Rating (C/O cycles) (with no maintenance) |
Mechanical | 12,500 | 12,500 | 12,500 | 12,500 | 12,500 | |
| Electrical 440 V | 6000 | 6000 | 3000 | 6000* | 6000* | ||
| Electrical 1000 V | — | — | — | — | — | ||
Ratings for IEC 60947-3 Rated Non-Automatic MasterPact NT Switches
| Frame Rating | 800/1000 A | 1250/1600 A | ||
|---|---|---|---|---|
| Withstand Rating Code | HA | HA | ||
| Rated Making Capacity (Peak kA) | Icm | 220/415 Vac, 50/60 Hz | 75 | 75 |
| 440 Vac, 50/60 Hz | 75 | 75 | ||
| 500/690 Vac, 50/60 Hz | 75 | 75 | ||
| 1000 Vac, 50/60 Hz | — | — | ||
| Short-Time Withstand Current (kA) | Icw | Vac 50/60 Hz, 0.5 s | 36 | 36 |
| Breaking Capacity (kA at 690 Vac) (with external protection relay) | Icu | maximum delay 350 ms | 36 | 36 |
Correction Factors
Temperature Correction Factors
| Maximum Ambient Temperature | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °F | 158 | 140 | 122 | 104 | 86 | 77 | 68 | 50 | 32 | 14 | -4 | -13 | -22 |
| °C | 70 | 60 | 50 | 40 | 30 | 25 | 20 | 10 | 0 | -10 | -20 | -25 | -30 |
| Current | 0.75 | 0.83 | 0.92 | 1 | 1.07 | 1.11 | 1.14 | 1.21 | 1.27 | 1.33 | 1.39 | 1.42 | 1.44 |
Altitude Correction Factors per ANSI C37.20.1 par. 7.1.4.1 (Table 10)
| < 6600 ft. (2000 m) | 8500 ft (2600 m) | 13,000 ft. (3900 m) | |
|---|---|---|---|
| Voltage | 1 | 0.95 | 0.80 |
| Current | 1 | 0.99 | 0.96 |
Shipping Weights
Shipping Weights for UL Listed/ANSI Certified MasterPact NW Circuit Breakers
| Circuit Breaker Rating (A) | Circuit Breaker* (lb/kg) |
Cradle (lb/kg) | Connector Type and Weight (lb/kg) |
Pallet (lb/kg) | Total Weight (lb/kg) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3P | 4P | 3P | 4P | Type | 3P | 4P | 3P | 4P | ||
| 800 1600 2000 |
109/50 | 142/65 | 97/44 | 116/53 | FCF | 42/19 | 55/25 | 17/8 | 265/121 | 320/151 |
| FCT | 84/38 | 109/50 | 17/8 | 307/140 | 384/176 | |||||
| RCTH or RCTV | 17/8 | 22/10 | 17/8 | 240/110 | 297/136 | |||||
| 2500 3000 |
127/58 | 165/75 | 124/57 | 149/68 | FCT | 80/36 | 104/47 | 17/8 | 348/159 | 435/198 |
| RCTH or RCTV | 26/12 | 34/15 | 17/8 | 294/135 | 365/166 | |||||
| 2000 (L1, L1F) 3200 (H1, H2, H3) |
127/58 | 165/75 | 124/57 | 149/68 | RCOV (standard | 100/46 | 130/59 | 17/8 | 368/169 | 461/210 |
| 4000 W-Frame (H1, H2, H3) |
RCOV (ArcBlok) | 153/69 | NA | 421/191 | NA | |||||
| RCOV (special) | 115/52 | 145/66 | 259/118 | 327/149 | ||||||
| 3200 (L1) 4000 |
227/103 | 295/134 | 278/126 | 334/152 | FCF | 84/38 | 109/50 | 39/18 | 628/285 | 777/354 |
| FCT | 168/77 | 218/99 | 39/18 | 712/324 | 886/403 | |||||
| RCTH or RCTV | 52/24 | 68/31 | 39/18 | 596/271 | 736/335 | |||||
| 5000 | 227/103 | 295/134 | 278/126 | 334/152 | FCT | 168/77 | 218/99 | 39/18 | 712/324 | 886/403 |
| RCTH or RCTV | 52/24 | 68/31 | 39/18 | 596/271 | 736/335 | |||||
| 6000 | 227/103 | 295/134 | 278/126 | 334/152 | RCTH or RCTV | 396/180 | 528/240 | 39/18 | 940/427 | 1196/544 |
Shipping Weights for IEC 60947-2 Rated MasterPact NW Circuit Breakers
| Circuit Breaker Rating (A) | Circuit Breaker* (lb/kg) | Cradle (lb/kg) | Connector Type and Weight (lb/kg) |
Pallet (lb/kg) | Total Weight (lb/kg) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3P | 4P | 3P | 4P | Type | 3P | 4P | 3P | 4P | ||
| 800 | 109/50 | 132/60 | 97/44 | 116/53 | FCF | 42/19 | 55/25 | 17/8 | 265/121 | 320/145 |
| 1000, 1250, 1600, 2000 | RCTH or RCTV | 17/8 | 22/10 | 17/8 | 240/110 | 287/131 | ||||
| 2500 3200 |
127/58 | 165/75 | 124/57 | 149/68 | FCF | 42/19 | 55/25 | 17/8 | 310/142 | 386/175 |
| RCTH or RCTV | 17/8 | 22/10 | 17/8 | 285/131 | 353/161 | |||||
| 4000 | 127/58 | 165/75 | 124/57 | 149/68 | RCTH or RCTV | 42/19 | 55/25 | 17/8 | 310/142 | 386/176 |
| 4000b, 5000, 6300 | 227/103 | 295/134 | 278/126 | 334/152 | RCTH or RCTV | 52/24 | 68/31 | 39/18 | 596/271 | 736/335 |
Shipping Weights for UL Listed/ANSI Certified MasterPact NT Circuit Breakers
| Circuit Breaker Rating (A) | Circuit Breaker* (lb/kg) | Cradle (lb/kg) | Connector Type and Weight (lb/kg) |
Pallet (lb/kg) | Total Weight (lb/kg) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3P | 4P | 3P | 4P | Type | 3P | 4P | 3P | 4P | ||
| 800 1200 |
40/18 | 52/24 | 36/16 | 43/20 | FCF | 15/7 | 20/9 | 10/5 | 101/46 | 125/58 |
| RCTH or RCTV | 6/3 | 8/4 | 10/5 | 92/42 | 113/53 | |||||
| 1600* | 40/18 | 52/24 | N/A | N/A | RCTV | 18/8 | 20/9 | 10/5 | 68/31 | 82/38 |
Shipping Weights for IEC 60947-2 Rated MasterPact NT Circuit Breakers
| Circuit Breaker Rating (A) | Circuit Breaker* (lb/kg) | Cradle (lb/kg) | Connector Type and Weight (lb/kg) |
Pallet (lb/kg) | Total Weight (lb/kg) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3P | 4P | 3P | 4P | Type | 3P | 4P | 3P | 4P | ||
| 800 | 35/16 | 46/21 | 31/14 | 37/17 | FCF | 15/7 | 20/9 | 10/5 | 91/41 | 113/52 |
| 1000, 1250, 1600 | RCTH or RCTV | 6/3 | 8/4 | 10/5 | 82/38 | 101/47 | ||||