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Federal Pacific NEF437100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Federal Pacific
NEF437100
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF437100
Quantity
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Federal Pacific NEF437100 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Federal Pacific NEF437100 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF437100-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 | 4-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed, Vibration Tested |
Quantity
Federal Pacific NEF437100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF437100-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 | 4-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed, Vibration Tested |
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Description
Delivering reliable circuit protection, the Federal Pacific NEF437100 is a 100A, three-pole molded case breaker designed for commercial environments. It utilizes proven thermal-magnetic technology to detect and interrupt damaging overloads. Engineered to match original factory specifications, this bolt-on device installs into legacy Federal Pacific NEF panelboards. With an interrupting rating of 14 kAIC at 480VAC, this HACR-rated breaker is vibration tested and suitable for reverse feeding.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF437100-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 | 4-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed, Vibration Tested |
Product FAQs
6 answersWhich panelboards accept the NEF437100 circuit breaker?
This N-Frame breaker is engineered exclusively as a drop-in replacement for legacy Federal Pacific NEF series panelboards.
Are there direct cross-references for this 100A Federal Pacific breaker?
Yes, the NEF437100 can serve as an exact drop-in substitute for obsolete Federal Pacific NEF433100 and NEF435100 molded case circuit breakers.
What wire sizes are accepted by the terminal lugs on the NEF437100?
The factory lugs accommodate conductors ranging from 4 AWG to 1/0 AWG, making it suitable for standard 100A commercial branch circuit wiring.
Can the NEF437100 be used in direct current applications?
Yes, in addition to its AC ratings, this thermal magnetic breaker is rated for 250VDC applications with a 10kAIC interrupting capacity.
Does the NEF437100 share the safety issues associated with Federal Pacific Stab-Lok breakers?
No. The NEF437100 is a commercial N-Frame molded case circuit breaker with a secure bolt-on connection. It is entirely distinct from the residential Stab-Lok plug-on breakers that were the subject of historical safety concerns.
Are the trip settings on the NEF437100 adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit, meaning the long-time and instantaneous protection parameters cannot be modified in the field.
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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.