Federal Pacific NEF437150 Circuit Breaker
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Core Specs
See full specsFederal Pacific NEF437150 3 Pole Circuit Breaker
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Description
Federal Pacific NEF437150 3 Pole Circuit Breaker
The Federal Pacific NEF437150 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 150 Amps and a voltage rating of 480VAC. It has an interrupting rating of 14kAIC at 480V. The NEF437150 has a bolt-on connection type and includes LI - long time and instantaneous trip functions.
Specifications
| Brand | Federal Pacific |
|---|---|
| Series | NEF |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 480VAC |
| Phase | 3 |
| AIC Rating | 14kA @ 480VAC |
| Frame Type | NEF-7 |
|---|---|
| Terminal Type | Load Side Lug |
| For Use With | Federal Pacific NEF Panelboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
Product FAQs
6 answersWhat type of panelboards is the NEF437150 designed to fit?
This NEF-7 frame breaker is designed for Federal Pacific Electric (FPE) commercial panelboards and switchboards, such as the CDP and NA1B series, when used with the appropriate mounting hardware kits.
Can I use this breaker in a residential FPE Stab-Lok panel?
No. The NEF437150 is a commercial bolt-on molded case circuit breaker and is not compatible with residential FPE Stab-Lok load centers.
How is the NEF437150 secured within the panelboard?
It utilizes a bolt-on connection to attach directly to the panelboard bus. Depending on the specific FPE enclosure, you will need compatible bus connection hardware, such as the NEF1K kit for CDP panels.
How does the thermal-magnetic trip unit function on this breaker?
The breaker features LI (long-time and instantaneous) trip functions. The thermal component provides a long-time delay for overload protection, while the magnetic component provides instantaneous tripping for short-circuit faults.
Is the Federal Pacific NEF437150 still actively manufactured?
No, Federal Pacific Electric (FPE) is no longer in business and original NEF-frame breakers are obsolete. Replacements are typically sourced to maintain existing FPE commercial switchgear and panelboards still in service.
What should be verified before installing this breaker into an existing FPE panel?
Electricians must verify that the panelboard accepts NEF-7 frame breakers and that the correct bus connection hardware is present. Using incorrect mounting kits can compromise the bolt-on connection and overall panel safety.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
- SCStephen C.Verified BuyerReviewingFederal Pacific NEF431030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/21/26Fpe 3 pole 30 amp breaker.
I ordered the breaker on Thursday and it was at my house for Saturday morning. Breaker is in pristine condition. A real bail out. Thank you.
- MRMichael R.Verified BuyerReviewingFederal Pacific NEF431040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Warehouse Air Compressor
Worked like a charm.
Thank you.
- DPDiana P.ReviewingFederal Pacific NEF433020 3 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/21Satisfied
Service was GREAT!!
- DJDavid J.ReviewingFederal Pacific / American NEF431100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/13/21This worked out great.
This worked out great.
- MWMark W.ReviewingFederal Pacific NEF421050 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/17/19Great service & pricing
Superbreakers did a great job for us. We called and asked if the breakers were actually in their possession. Withing 30 minutes they called us back (which is rare these days), and we got our breakers the next morning.