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Federal Pacific NFJ631150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Federal Pacific
NFJ631150
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ631150
Quantity
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Federal Pacific NFJ631150 - 150A 3 Pole Molded Case Circuit Breaker
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Description
A dependable solution for commercial facilities, the Federal Pacific NFJ631150 is a 150-amp, 3-pole molded case circuit breaker. It safeguards branch circuits against overcurrents in 600VAC environments. Engineered to maintain aging infrastructure, this N-Frame MCCB serves as an exact replacement component. It installs into legacy Federal Pacific enclosures with a standard bolt-on connection. The unit is equipped with a fixed thermal-magnetic trip and provides an 18 kAIC rating at 480V.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ631150-R |
| Series | NFJ |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Panelboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat panelboards are compatible with the NFJ631150 circuit breaker?
This N-Frame breaker is designed to mount into legacy Federal Pacific Electric (FPE) panelboards and switchgear that accept bolt-on NFJ-series breakers.
What size wire does the NFJ631150 accept?
The load-side lugs on this breaker accommodate conductors ranging from 4 AWG to 300 kcmil.
Is the Federal Pacific NFJ631150 still manufactured?
The original Federal Pacific Electric (FPE) NFJ631150 is obsolete and no longer in production. However, exact aftermarket replacements that fit the same legacy enclosures are often manufactured by companies like American Circuit Breaker Corp (ACBC) and Challenger.
Can I adjust the trip settings on the NFJ631150?
No, this breaker features a fixed thermal-magnetic trip unit with non-interchangeable long-time and instantaneous (LI) functions. The trip settings cannot be adjusted in the field.
How does the NFJ631150 connect to the panel bus?
It features a standard bolt-on connection for secure mounting to the panelboard bus. This provides a rigid connection that prevents loosening over time in commercial and industrial applications.
Can I use the NFJ631150 in a Stab-Lok panel?
No. The NFJ631150 is a commercial-grade N-Frame molded case circuit breaker with a bolt-on connection. It is not compatible with residential FPE Stab-Lok load centers, which require plug-on Stab-Lok breakers.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
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Rating
3 reviews
- ESEvan S.Verified BuyerReviewingFederal Pacific NFJ631225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Review
Works great!
- RCRalph C.Verified BuyerReviewingFederal Pacific NFJ631150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars11/10/25Federal Pacific NF J631150 Breaker
Surprised they had it!
Great shape, well packaged. Fast shipping
- KPKeith P.ReviewingFederal Pacific NFJ631200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/15/20Quick and easy ordering
Quick and easy ordering