Federal Pacific NJ631150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Quantity
Federal Pacific NJ631150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A drop-in replacement for legacy commercial systems, the Federal Pacific NJ631150 is a 3-pole, 150A molded case circuit breaker. It provides essential overcurrent protection for aging electrical infrastructure. Designed for unit mount applications, this N-Frame breaker installs into existing FPE panels and motor control centers without adapters. Rated for 600VAC, it features a thermal-magnetic trip unit with LI functions and delivers a 30kAIC interrupting capacity at 480V.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NJ631150 |
| Series | NJ |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | NJ |
|---|---|
| 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
5 answersWhat equipment is compatible with the Federal Pacific NJ631150?
This N-frame molded case circuit breaker is designed for unit mount installations in legacy Federal Pacific switchboards, panelboards, and motor control centers.
How does the NJ631150 mount into an electrical panel?
It utilizes a bolt-on connection type for unit mount configurations, meaning it must be physically bolted to the busbar or mounting pan rather than plugging in.
What is the benefit of the adjustable magnetic trip on the NJ631150?
The adjustable magnetic trip allows electricians to tune the instantaneous short-circuit response. This helps coordinate with downstream breakers and prevents nuisance tripping from motor inrush currents.
Are direct replacements available for legacy Federal Pacific N-frame breakers?
Yes, exact replacements like the NJ631150 are available to maintain existing FPE switchboards and motor control centers without the need for modern retrofit adapters.
Is the NJ631150 part of the residential Stab-Lok series?
No, the NJ631150 is a commercial-grade, N-frame molded case circuit breaker designed for heavy-duty switchboards and motor control centers. It does not use the residential Stab-Lok connection design.
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