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Federal Pacific NJL632250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Bolt-On
Federal Pacific
NJL632250
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NJL632250
Quantity
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Federal Pacific NJL632250 - 250A 3 Pole Molded Case Circuit Breaker
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Description
Designed to maintain existing electrical systems, the 250A Federal Pacific NJL632250 provides essential long-time and instantaneous trip functions. This 3-pole molded case circuit breaker is ideal for demanding commercial environments. As a legacy component, it bolts securely into Federal Pacific NJL panelboards for a precise fit. Facility managers can confidently use this unit to replace older NJL631250 or NJL633250 breakers. The N-Frame device delivers a solid 30kAIC at 480VAC.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NJL632250 |
| Series | NJL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | NJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NJL Panelboards |
| Wire Gauge | 4 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | NEMA AB 1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the NJL632250 circuit breaker?
This breaker is designed for installation in legacy Federal Pacific (FPE) NJL and CDP series panelboards and switchboards that accept N-Frame bolt-on breakers.
Can I use the NJL632250 to replace a Challenger NJL breaker?
Yes, Federal Pacific and Challenger shared many molded case circuit breaker designs. The NJL632250 can serve as a direct replacement for Challenger breakers with the exact same catalog number and frame specifications.
Is the Federal Pacific NJL632250 still in active production?
No, Federal Pacific Electric (FPE) is no longer in business, and the NJL632250 is an obsolete legacy component. It is sourced to provide an exact-fit replacement for existing N-Frame applications without requiring expensive panel modifications.
What is the short-circuit rating for the NJL632250 in a 480V commercial system?
When installed in a 480VAC system, the breaker is rated to safely interrupt up to 30,000 amps (30kAIC). For 240V applications, the rating increases to 42kAIC. Always confirm that the available fault current at the panel does not exceed these limits.
What conductor materials and sizes are approved for the NJL632250 lugs?
The factory-installed lugs are dual-rated for both aluminum and copper wire, accepting conductor sizes from 4 AWG up to 350 kcmil.
Are the thermal and magnetic trip elements on the NJL632250 adjustable?
No, the thermal-magnetic trip unit is completely fixed. The long-time (thermal) and instantaneous (magnetic) trip functions are factory calibrated for 250 amps and cannot be adjusted in the field.
Are there specific safety considerations when replacing an FPE NJL632250?
Because this is a legacy bolt-on molded case breaker, ensure the panel busbars are clean, free of pitting, and properly torqued during installation. Poor bus connections in older Federal Pacific panels can lead to thermal failure.
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Reviews
Review summary
Customers rate this product 3.0 out of 5 based on 1 review.
Total 5 star reviews: 0 Total 4 star reviews: 0 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
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1 review
- MNMichael N.Verified BuyerReviewingFederal Pacific NJL631300 - 300A 3 Pole Molded Case Circuit BreakerRated 3 out of 5 stars8/7/25Quick shipping 👍
Came missing lugs..
Wanna buy mine ? Tripping prematurely....
Michael 201-578-0628