Federal Pacific NM631800 Molded Case Circuit Breaker
- 800A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific NM631800 - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the legacy NM series, this 800-amp molded case circuit breaker provides reliable overcurrent protection for industrial facilities. It features a rugged bolt-on design and an interchangeable thermal-magnetic trip unit. Designed as an exact replacement component, it mounts into existing Federal Pacific switchgear and panelboards without requiring aftermarket adapters. Rated for 30kAIC at 480VAC, the three-pole breaker delivers robust fault interruption and includes load-side lugs.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NM631800 |
| Series | NM |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Switchgear / Panelboards |
| Wire Gauge | (3) 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, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | NEMA AB-1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
7 answersWhat equipment is the Federal Pacific NM631800 designed to fit?
This legacy N Frame molded case circuit breaker is designed for direct installation into existing Federal Pacific switchgear and panelboards.
What type of wire connections does the NM631800 accept?
This breaker features load side lug terminals that accept three cables per phase, accommodating wire sizes from 250 kcmil to 500 kcmil.
How does this breaker mount into the panel?
The NM631800 utilizes a standard bolt-on mounting configuration for secure connection to the busbar in Federal Pacific enclosures.
What is the interrupting capacity of this breaker at 480V?
It provides a standard interrupting capacity of 30kA at 480VAC, along with 42kA at 240VAC and 22kA at 600VAC.
What type of trip unit is included with the NM631800?
It is equipped with an interchangeable thermal magnetic trip unit featuring fixed thermal, or Long-Time, and adjustable magnetic, or Instantaneous, trip functions.
Are there any safety considerations when working with legacy Federal Pacific equipment?
Yes. Federal Pacific Electric equipment is obsolete, and some legacy panels have documented safety concerns. Always consult a licensed electrician to evaluate the condition of your existing switchgear before installing replacement breakers.
Is the NM631800 a direct replacement for older FPE N Frame breakers?
Yes, this breaker serves as an exact replacement component for 800 amp, 3 pole applications within the Federal Pacific N Frame family, mounting without the need for aftermarket adapters.
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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