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Federal Pacific NC040 Miniature Circuit Breaker
- 40A
- 1 Pole
- Plug-On
Federal Pacific
NC040
Miniature Circuit Breaker
Brand
Federal Pacific
SKU
NC040
Quantity
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Federal Pacific NC040 - 40A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Quantity
Federal Pacific NC040 - 40A 1 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NC040 |
| Series | NC |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 14-6 AWG (Cu/Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Stab-Lok Design, Thin / Wafer Style (1/2 inch per pole), Color Coded Handle |
Quantity
Federal Pacific NC040 - 40A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NC040-R |
| Series | NC |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 14-6 AWG (Cu/Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Stab-Lok Design, Thin / Wafer Style (1/2 inch per pole), Color Coded Handle |
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Description
Providing 40 amps of overcurrent defense, this single-pole plug-on component is manufactured for traditional Federal Pacific Stab-Lok load centers. The thin wafer design occupies just one-half inch of panel space, making it ideal for high-density residential or commercial setups. This legacy item mounts into existing FPE hardware, ensuring seamless compatibility. Users seeking a newer manufactured equivalent can cross-reference the UBIF040N. The unit carries a standard 10kAIC rating at 120VAC.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NC040-R |
| Series | NC |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 14-6 AWG (Cu/Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Stab-Lok Design, Thin / Wafer Style (1/2 inch per pole), Color Coded Handle |
Product FAQs
4 answersWhat is the difference between Federal Pacific NC and NA series circuit breakers?
The NC series, including the NC040, features a 1/2-inch thin wafer design that occupies half the panel space of standard breakers. The NA series features a standard 1-inch thick body. Both are designed for Federal Pacific Stab-Lok load centers, but you must verify which size your specific panel configuration requires.
Is there a modern replacement available for the Federal Pacific NC040?
Yes, Connecticut Electric manufactures a modern, ETL-listed replacement for this breaker under catalog number UBIF040N. It is designed to fit the same legacy Stab-Lok enclosures as the original FPE NC040.
Can I install the NC040 in a non-FPE panel?
No. The NC040 is a plug-on miniature circuit breaker designed exclusively for legacy Federal Pacific Stab-Lok load centers. Its unique stab connection is not interchangeable with load centers from other manufacturers.
Are there safety concerns associated with Federal Pacific Stab-Lok load centers?
Yes, legacy Federal Pacific Stab-Lok panels and circuit breakers have a documented history of failing to trip during overcurrent or short-circuit conditions. Licensed electricians generally recommend evaluating the entire load center for a complete replacement rather than just swapping individual breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
Total 5 star reviews: 6 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
6 reviews
- DBdonnie b.Verified BuyerReviewingFederal Pacific NC015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/27/26breaker
Had a warranty issue and account manager was AWESOME / Keizer Davids
- JNJoe N.Verified BuyerReviewingFederal Pacific NC020 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/25Purchased four circuit breakers
Was happy with all the service would’ve wished the person would inform me if I would’ve spent $15 more I could’ve got free shipping. That way I could’ve ordered another 20 amp circuit breaker. And got it for free.
- PMPatrick M.ReviewingFederal Pacific NC015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars5/31/23great selection and free delivery!!!
great selection and free delivery!!!
- MPMark P.ReviewingFederal Pacific NC015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/27/23Quick
Provided quick turnaround 👍. Resolved my parents issue 👍
- TTTammy T.ReviewingFederal Pacific NC0240 - 40A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/22Federal Pacific breakers
I wasn't sure about ordering my particular breakers online because they don't make replica replacements but found the warranty outstanding. The follow-up call as a new customer and the speed with which my order was processed and completed was superior. The price was 1/3 what the ONE local supplier charged.