Federal Pacific NEF425045 Molded Case Circuit Breaker
- 45A
- 2 Pole
- Bolt-On
Federal Pacific
NEF425045
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF425045
Quantity
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Federal Pacific NEF425045 - 45A 2 Pole Molded Case Circuit Breaker
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Description
Designed to support commercial and industrial power distribution, this 45A thermal-magnetic device provides essential long-time and instantaneous trip functions. It installs into classic Federal Pacific NEF or CDP panelboards, serving as an exact fit for aging infrastructure. Facility managers can also use this unit to replace the UBIF245N substitute model. Rated for 18kAIC at 240VAC, the N-frame design features reverse feed capabilities and vibration-tested construction.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF425045 |
| Series | NEF |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | NEF |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NEF Panelboards, CDP Panelboards |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 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 |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Reverse Feed, Vibration Tested |
Product FAQs
6 answersWhich panelboards are compatible with the NEF425045 circuit breaker?
This breaker is engineered specifically for installation in legacy Federal Pacific NEF panelboards and CDP panelboards.
What wire sizes are compatible with the load side lugs on the NEF425045?
The load side lugs are designed to accept wire gauges ranging from 14 AWG to 2 AWG.
Does the NEF425045 support direct current (DC) systems?
Yes, in addition to standard AC voltages, this thermal magnetic breaker is rated for DC applications with an interrupting capacity of 10kA at 250VDC.
Is the NEF425045 interchangeable with Federal Pacific Stab-Lok breakers?
No. NEF series breakers are commercial bolt-on molded case circuit breakers designed specifically for NEF and CDP panelboards. They are not compatible with residential Stab-Lok load centers.
Is Federal Pacific still manufacturing the NEF series breakers?
Federal Pacific is no longer in business. The NEF425045 is sourced as a legacy replacement component to maintain existing FPE electrical infrastructure.
Can the trip settings on the NEF425045 be adjusted in the field?
No, this breaker features a non-interchangeable trip unit with fixed thermal and fixed magnetic settings for long-time and instantaneous (LI) protection.
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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.