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Federal Pacific NJL631300 Molded Case Circuit Breaker
- 300A
- 3 Pole
- Unit Mount
Federal Pacific
NJL631300
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NJL631300
Quantity
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Federal Pacific NJL631300 - 300A 3 Pole Molded Case Circuit Breaker
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Description
Preserving the functionality of older electrical systems is straightforward with this 300A unit mount breaker. Designed for legacy Federal Pacific panelboards, it installs into your existing setup to restore power distribution without requiring adapter kits. The 3-pole device features a robust thermal-magnetic trip mechanism with adjustable magnetic settings. Rated for 42kAIC at 240VAC, it ensures reliable overcurrent defense and acts as an effective alternative to the NJL632300 model.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NJL631300-R |
| Series | NJL |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Switchboards, Panelboards |
| Wire Gauge | 250 kcmil - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
5 answersWhat enclosures or panels accept the NJL631300 circuit breaker?
This N-frame molded case circuit breaker is engineered specifically for legacy Federal Pacific switchboards and panelboards designed to accommodate bolt-on unit mount breakers.
Can the NJL631300 be used to replace an NJL632300?
Yes, the NJL631300 serves as a direct functional substitute for the NJL632300 model in legacy Federal Pacific panelboards, maintaining the same 300A rating and physical N-frame footprint.
How does the trip unit operate on the NJL series?
The NJL631300 utilizes a thermal-magnetic trip unit with an LI function code. It provides fixed thermal protection for long-time overloads and adjustable magnetic protection for instantaneous short-circuit faults.
How is the NJL631300 installed into the panel?
This is a unit mount, bolt-on circuit breaker. It fastens directly to the panelboard chassis or buswork using bolted connections, which preserves panel integrity in older industrial switchboards.
Are original Federal Pacific NJL breakers still in active production?
No, Federal Pacific Electric (FPE) is no longer in business, and original NJL series breakers are obsolete. They are sourced to maintain and service existing legacy infrastructure without requiring a complete panel retrofit.
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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