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Federal Pacific NEF435100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Federal Pacific
NEF435100
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF435100
Quantity
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Federal Pacific NEF435100 - 100A 3 Pole Molded Case Circuit Breaker
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Description
A drop-in replacement for discontinued Federal Pacific systems, the NEF435100 is a 3-pole, 100A molded case circuit breaker built for commercial applications. It features a thermal-magnetic trip unit with fixed long-time and instantaneous protection. This N-Frame breaker mounts into legacy Federal Pacific NEF panelboards, providing a seamless fit. It serves as an exact substitute for NEF433100 and NEF437100 breakers. Rated for 14kAIC at 480VAC, this bolt-on MCCB ensures reliable protection.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF435100-R |
| Series | NEF |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NEF Panelboards |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, Bell Alarm, Padlock Attachment |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed |
Product FAQs
7 answersIs the NEF435100 interchangeable with other Federal Pacific catalog numbers?
Yes. The NEF435100 serves as a direct replacement and is fully interchangeable with legacy Federal Pacific part numbers NEF433100 and NEF437100.
What equipment is the NEF435100 designed to fit?
This N-Frame breaker is engineered specifically for installation in legacy Federal Pacific NEF panelboards used in commercial and industrial distribution systems.
How is the NEF435100 secured inside the panelboard?
This is a bolt-on molded case circuit breaker, meaning it fastens directly to the panelboard bus with bolts rather than snapping into place. This provides a highly secure mechanical and electrical connection for commercial environments.
What size conductors can be terminated on the NEF435100?
The standard mechanical lugs on this breaker accommodate wire sizes from 14 AWG up to 1/0 AWG. Ensure your conductors are properly sized for the 100-amp rating according to local electrical codes.
Can I adjust the trip settings on the NEF435100?
No. This breaker utilizes a thermal-magnetic trip unit with fixed long-time and fixed instantaneous (LI) settings, meaning the trip curve cannot be field-adjusted.
Can this breaker be used in DC applications?
Yes. In addition to its AC ratings of 18kAIC at 240VAC and 14kAIC at 480VAC, the NEF435100 is rated for use in 250VDC systems with an interrupting capacity of 10kAIC.
Is the NEF435100 affected by the safety concerns associated with Federal Pacific Stab-Lok breakers?
No. The NEF435100 is a commercial-grade, bolt-on N-Frame molded case circuit breaker. It does not utilize the residential Stab-Lok plug-on connection system, which is the primary source of safety concerns in legacy FPE residential load centers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
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Rating
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.