Federal Pacific NJ631125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Federal Pacific
NJ631125
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NJ631125
Quantity
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Federal Pacific NJ631125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Federal Pacific NJ631125 - 125A 3 Pole Molded Case Circuit Breaker
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| Brand | Federal Pacific |
|---|---|
| Part Number | NJ631125 |
| Series | NJ |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Panels, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Quantity
Federal Pacific NJ631125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NJ631125 |
| Series | NJ |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Panels, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Similar Items
125A 3 Pole Molded Case Circuit Breaker
125A 3 Pole Molded Case Circuit Breaker
125A 3 Pole Molded Case Circuit Breaker
Description
Part of Federal Pacific's legacy NJ series, this 3-pole, 125A molded case circuit breaker provides reliable commercial and industrial power distribution. The unit-mount design installs into older Federal Pacific panels, switchboards, and motor control centers, serving as an exact drop-in replacement for aging N-frame infrastructure. It features a non-interchangeable thermal magnetic trip unit for long-time and instantaneous (LI) protection, rated at 30kAIC at 480VAC.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NJ631125 |
| Series | NJ |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Panels, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat equipment is the Federal Pacific NJ631125 designed to fit?
This N-frame molded case circuit breaker is engineered specifically for legacy Federal Pacific panelboards, switchboards, and motor control centers.
How is the NJ631125 installed into an electrical panel?
This breaker utilizes a unit mount, bolt-on connection. It must be bolted directly to the busbar of a compatible Federal Pacific enclosure.
What is the acceptable wire gauge range for the terminal lugs?
The lugs on this breaker accommodate wire sizes from 4 AWG up to 300 kcmil.
How does the LI trip function operate on this breaker?
The LI designation indicates long-time and instantaneous trip functions. It uses a thermal-magnetic mechanism with a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit protection.
Can the NJ631125 be used in DC power applications?
Yes, in addition to its standard AC ratings, this breaker is rated for use in DC electrical systems up to 250VDC.
Is the NJ631125 a current production model?
No, Federal Pacific Electric is no longer manufacturing new equipment. This legacy breaker is used as a direct drop-in replacement to maintain existing FPE distribution systems without the need for complex retrofits.
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