Federal Pacific NM631300R Molded Case Circuit Breaker
- 300A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific NM631300R - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Maintaining older power distribution networks is simplified with this 300-amp, 3-pole molded case breaker. It delivers essential long-time and instantaneous trip functions for heavy commercial applications utilizing Federal Pacific hardware. This N-frame unit acts as an exact cross-reference for the NM631300, bolting firmly into legacy switchboards. Electricians appreciate the straightforward installation that avoids costly panel upgrades.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NM631300R-R |
| Series | NM |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | NM |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Switchboards |
| Wire Gauge | (1) 1/0 AWG - 600 kcmil |
| Max Wire | 600 kcmil |
| Min Wire | 1/0 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, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | NEMA AB-1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat type of enclosures or switchboards is the NM631300R designed for?
This N-frame breaker is designed for use in legacy Federal Pacific Electric (FPE) industrial switchboards and motor control centers that accept bolt-on NM frame breakers.
How does the LI trip unit operate on the NM631300R?
The LI designation indicates Long-Time (L) and Instantaneous (I) protection. It uses a thermal-magnetic mechanism with a fixed thermal element for gradual overloads and an adjustable magnetic setting to tune the instantaneous short-circuit response.
Does this breaker require specific mounting hardware?
As a bolt-on breaker, it requires standard mounting hardware compatible with Federal Pacific switchboard chassis. Ensure your panel has the correct busbar spacing and tapped holes for an N-frame breaker.
Is this breaker affected by the residential FPE Stab-Lok safety recalls?
No. The NM631300R is a commercial and industrial molded case circuit breaker. It is not part of the residential Stab-Lok series that is commonly associated with safety advisories.
Can I use this to replace other FPE N-frame breakers?
Yes, it can typically replace other 300-amp NM-frame breakers in Federal Pacific switchboards, provided the interrupting ratings and bolt-on mounting requirements match your system.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JGJoseph G.ReviewingFederal Pacific NM031500 Trip UnitI recommend this productRated 5 out of 5 stars2/1/18The best
Just what I expected