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Federal Pacific NJL631350R Molded Case Circuit Breaker
- 350A
- 3 Pole
- Bolt-On
Federal Pacific
NJL631350R
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NJL631350R
Quantity
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Federal Pacific NJL631350R - 350A 3 Pole Molded Case Circuit Breaker
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Description
Serving as a critical component for aging infrastructure, this 350A, 3-pole MCCB delivers reliable thermal-magnetic protection. It is designed for commercial 600VAC systems. The bolt-on unit mounts into classic Federal Pacific panelboards and switchboards. As a legacy N-frame component, it provides an exact fit, eliminating the need for complex retrofit kits. It crosses to the NJL632350. Rated for 30kAIC at 480V, the non-interchangeable trip design ensures consistent performance.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NJL631350R-R |
| Series | NJL |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | NJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Switchboards, Panelboards |
| Wire Gauge | 250 kcmil - 500 kcmil (Al/Cu) |
| 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, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm 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 are compatible with the NJL631350R?
This legacy N-Frame breaker is a bolt-on unit designed specifically for classic Federal Pacific switchboards and panelboards. It serves as an exact drop-in replacement, restoring power distribution without requiring complex retrofit kits or panel modifications.
Is there a direct cross-reference for the NJL631350R?
Yes, for Federal Pacific N-Frame applications, this breaker crosses directly to the NJL632350 alternative. Both catalog numbers share the same physical dimensions and electrical ratings for seamless integration into aging infrastructure.
What are the wiring and terminal specifications for this breaker?
The NJL631350R is supplied with load side lugs that accommodate aluminum or copper (Al/Cu) conductors. The acceptable wire range is 250 kcmil to 500 kcmil.
Can the trip settings on the NJL631350R be adjusted in the field?
No, this breaker utilizes a non-interchangeable thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It provides reliable long-time and instantaneous (LI) protection, but the trip curve cannot be modified.
What safety precautions apply when replacing legacy Federal Pacific breakers?
Because Federal Pacific is an obsolete manufacturer, replacement breakers like the NJL631350R should only be used to service existing FPE panels. Electricians must inspect the original busbars and bolt-on mounting hardware for signs of pitting, corrosion, or thermal damage before installing the replacement.
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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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Rating
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