Federal Pacific NM022400 Molded Case Circuit Breaker
- 400A
- 2 Pole
- Bolt-On
Quantity
Federal Pacific NM022400 - 400A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the legacy NM series, the Federal Pacific NM022400 is a 400A, 2-pole molded case circuit breaker. It provides robust long-time and instantaneous (LI) protection for commercial facilities. This N-frame breaker is engineered to mount into older Federal Pacific NM panelboards and switchboards. The bolt-on configuration ensures a reliable connection for single-phase applications. Equipped with an interchangeable trip unit, it offers a 30kAIC rating at 480VAC and includes heavy-duty lugs.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NM022400 |
| Series | NM |
| Amperage | 400A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 1 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Lug Kit |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
6 answersWhich panelboards accept the Federal Pacific NM022400 circuit breaker?
This N-frame breaker is engineered exclusively for bolt-on mounting in legacy Federal Pacific NM series panelboards and switchboards. It will not fit standard Stab-Lok residential load centers.
What are the lug wire size requirements for the NM022400?
The standard lugs accommodate dual conductors per phase, accepting wire gauges from 3/0 AWG up to 600 kcmil. Ensure proper torque specifications are followed during installation to maintain a secure connection.
How does the trip unit function on the NM022400?
It utilizes an interchangeable thermal-magnetic trip unit with LI (Long-Time and Instantaneous) functions. The thermal element provides fixed overload protection, while the magnetic element is adjustable for short-circuit response.
Is the NM022400 rated for systems above 240V AC?
Yes. Although frequently categorized under 240V, this breaker is rated for up to 600V AC. It delivers an interrupting capacity of 30kA at 480V AC and 22kA at 600V AC.
Is the NM022400 a direct replacement for existing 400A N-frame breakers?
Yes, it serves as an exact drop-in replacement for existing 2-pole, 400A Federal Pacific N-frame breakers. This allows facilities to maintain their current NM series switchboards without the need for a complete system retrofit.
What precautions should be taken when installing this legacy FPE breaker?
Always de-energize the switchboard before installation. Because this is a legacy bolt-on component, inspect the panel busbars for signs of wear, pitting, or thermal damage before securing the breaker to ensure a safe and reliable connection.
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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