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Federal Pacific NC050 Miniature Circuit Breaker
- 50A
- 1 Pole
- Plug-On
Federal Pacific
NC050
Miniature Circuit Breaker
Brand
Federal Pacific
SKU
NC050
Quantity
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Federal Pacific NC050 - 50A 1 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Federal Pacific NC050 - 50A 1 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NC050 |
| Series | NC |
| Amperage | 50A |
| 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, Federal Pioneer Stab-Lok Panels |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| 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 NC050 - 50A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NC050-R |
| Series | NC |
| Amperage | 50A |
| 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, Federal Pioneer Stab-Lok Panels |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| 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
Delivering robust 50A overcurrent protection, this single-pole unit is essential for maintaining vintage electrical systems. It accommodates 14-4 AWG wiring for demanding residential loads. The breaker snaps securely into Federal Pacific and Federal Pioneer Stab-Lok load centers. It acts as an exact physical replacement for aging components and serves as an alternative to the UBIF050N. A signature half-inch wafer design allows for maximum circuit density within the panelboard.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NC050 |
| Series | NC |
| Amperage | 50A |
| 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, Federal Pioneer Stab-Lok Panels |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| 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
6 answersWhat is the difference between Federal Pacific NC and NA series breakers?
The NC series features a thin, half-inch wide per pole design, which allows for higher circuit density. The NA series is the thick, full-size 1-inch wide per pole design. You must verify which width your Stab-Lok panel slot requires before installation.
Can the NC050 be installed in a Federal Pioneer panel?
Yes. Federal Pioneer is the Canadian brand name for Federal Pacific Electric (FPE). The NC050 is physically and electrically compatible with both FPE and Federal Pioneer Stab-Lok load centers.
Is there a modern replacement available for the Federal Pacific NC050?
Yes. Connecticut Electric manufactures new replacement breakers for FPE Stab-Lok panels. The direct modern cross-reference for the 1-pole 50A thin NC050 is the UBIF050N.
Are there safety concerns with older Federal Pacific Stab-Lok breakers?
Vintage FPE Stab-Lok panels and breakers have a documented history of failing to trip during overcurrent conditions. Many electricians and inspectors recommend upgrading the entire panel or replacing aging breakers with newly manufactured, UL-listed UBI replacements to ensure proper protection.
How is the NC050 secured inside the load center?
It utilizes the proprietary Stab-Lok plug-on design, snapping directly onto the panel bus bar without the need for bolt-on hardware. Ensure the panel is completely de-energized before pressing the breaker firmly into place.
What is required if an NC050 is removed and the panel slot is left empty?
You must install a compatible Federal Pacific NC/NA/NB filler plate to cover the open space. This maintains a safe deadfront and prevents accidental contact with the live bus bar.
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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.