Federal Pacific NM631400R NM631400 - 400A 3 Pole Molded Case Circuit Breaker
- 400A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific NM631400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as a crucial component for industrial power distribution, this 400-amp breaker utilizes proven thermal-magnetic trip technology. The three-pole configuration supports heavy-duty commercial loads across multiple voltage levels. Electricians rely on this unit to fit seamlessly into existing Federal Pacific NM panelboards. It eliminates the need for complex retrofits when replacing older hardware. With a 30kA interrupting capacity at 480V, it maintains essential system safety.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NM631400R-R |
| Series | NM |
| Amperage | 400A |
| 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 NM Panelboards and Switchboards |
| Wire Gauge | (2) 3/0 AWG-600 kcmil |
| Max Wire | 600 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
4 answersWhat enclosures are compatible with the NM631400 circuit breaker?
This breaker is specifically designed for installation in legacy Federal Pacific NM panelboards and switchboards. It is a large molded case frame and is not compatible with residential Stab-Lok load centers.
What are the wire size requirements for the load lugs on this breaker?
The factory installed load side lugs accept two conductors per phase, accommodating wire sizes from 3/0 AWG up to 600 kcmil.
Does the NM631400 feature adjustable trip settings?
The thermal and magnetic trip settings are fixed. However, the breaker utilizes an interchangeable trip unit design, allowing the trip unit to be swapped within the NM frame if different protection parameters are required.
Is the NM631400 a direct replacement for older FPE NM frame breakers?
Yes, it serves as a direct replacement for existing 400A, 3-pole NM frame breakers in Federal Pacific switchgear, maintaining the exact physical dimensions and bolt-on mounting configuration.
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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