Federal Pacific NEF427100 Circuit Breaker
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Core Specs
See full specsFederal Pacific NEF427100 2 Pole Circuit Breaker
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Description
Federal Pacific NEF427100 2 Pole Circuit Breaker
The Federal Pacific NEF427100 is a 2 Pole thermal magnetic molded case circuit breaker with a current rating of 100 Amps and a voltage rating of 480VAC. It has an interrupting rating of 14kAIC at 480V. The NEF427100 has a bolt-on connection type and includes LI - long time and instantaneous trip functions.
Specifications
| Brand | Federal Pacific |
|---|---|
| Series | NEF |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 480VAC |
| Phase | 1 |
| AIC Rating | 14kA @ 480VAC |
| Frame Type | NEF-7 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NEF Panelboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
Product FAQs
5 answersWhich panelboards are compatible with the NEF427100 circuit breaker?
This breaker is designed to bolt directly into legacy Federal Pacific Electric (FPE) NEF and CDP series panelboards.
Is the NEF427100 a direct replacement for older FPE N-Frame breakers?
Yes, it serves as an exact drop-in replacement for aging 100A, 2-pole N-Frame breakers in Federal Pacific infrastructure, eliminating the need for retrofit adapters.
Are the trip settings on the NEF427100 adjustable?
No, this breaker features a non-interchangeable trip unit with fixed thermal and fixed magnetic (LI) trip functions.
Can the NEF427100 be used in reverse feed applications?
Yes, this breaker is suitable for reverse feed installations, allowing it to be back-fed in compatible FPE panels.
Can this 480V breaker be installed in a 240V system?
Yes, it can be safely installed in 240VAC systems, provided the available fault current does not exceed the breaker's interrupting capacity.
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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.