Federal Pacific NFJ424150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Bolt-On
Federal Pacific
NFJ424150
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ424150
Quantity
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Federal Pacific NFJ424150 - 150A 2 Pole Molded Case Circuit Breaker
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Description
Built for industrial environments, the Federal Pacific NFJ424150 delivers robust thermal-magnetic protection. This 150-amp, two-pole circuit breaker operates at up to 480VAC, making it suitable for heavy-duty electrical distribution networks. Engineered to support older infrastructure, this component installs into Federal Pacific NFJ panelboards. It offers an exact physical match to original hardware, eliminating the need for complex retrofits. The unit delivers an 18 kAIC rating at 480V.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ424150 |
| Series | NFJ |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC |
| Frame Type | NFJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NFJ 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, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the Federal Pacific NFJ424150?
The NFJ424150 is designed specifically for installation in legacy Federal Pacific NFJ panelboards and enclosures that accept N-Frame bolt-on circuit breakers.
Is the Federal Pacific NFJ424150 still in active production?
No, Federal Pacific Electric (FPE) is no longer in business, and the NFJ series is obsolete. However, exact replacement breakers are sourced to maintain existing FPE electrical infrastructure.
Are there interchangeable brands for the NFJ424150 circuit breaker?
Yes, following the closure of Federal Pacific Electric, the NFJ frame was also produced under the Challenger and American Circuit Breaker brand names. These serve as exact physical and electrical equivalents.
What wire gauge range is supported by the NFJ424150 terminals?
The load-side lugs on this molded case circuit breaker accommodate conductors ranging from 4 AWG to 300 kcmil.
What is the maximum interrupting capacity of the NFJ424150 at 240VAC?
While the breaker is rated for 18 kA at 480VAC, it provides a maximum interrupting capacity of 25 kA when applied in 240VAC systems.
Can the trip settings on the NFJ424150 be adjusted in the field?
No, this circuit breaker features a fixed thermal-magnetic trip unit. The long-time and instantaneous (LI) protection functions are non-interchangeable and cannot be adjusted.
How is the NFJ424150 secured to the panelboard bus?
This N-Frame circuit breaker utilizes a standard bolt-on connection to mount directly to the busbars in compatible Federal Pacific enclosures.
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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
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Works great!
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Surprised they had it!
Great shape, well packaged. Fast shipping
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Quick and easy ordering