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Federal Pacific NA240 Miniature Circuit Breaker
- 40A
- 2 Pole
- Plug-On
Federal Pacific
NA240
Miniature Circuit Breaker
Brand
Federal Pacific
SKU
NA240
Quantity
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Federal Pacific NA240 - 40A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Sold out
Quantity
Federal Pacific NA240 - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NA240 |
| Series | NA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 14 AWG - 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 |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | NA240-R |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
Quantity
Federal Pacific NA240 - 40A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NA240-R |
| Series | NA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 14 AWG - 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 |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | NA240-R |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
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Description
Finding the right fit for discontinued panelboards is critical, and this 40-amp miniature circuit breaker offers an exact match. It mounts into classic Federal Pacific Stab-Lok enclosures, restoring safe power distribution without requiring complex adapter kits. The two-pole, full-size design features a standard 10kAIC interrupt rating and reliable common trip functionality. It acts as a direct substitute for older NA series hardware and replaces the UBIF240N aftermarket alternative.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NA240-R |
| Series | NA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Load Centers |
| Wire Gauge | 14 AWG - 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 |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | NA240-R |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
Product FAQs
5 answersIs there a modern aftermarket replacement for the FPE NA240?
Yes, Connecticut Electric manufactures the UBIF240N [1.2.2]. This is a direct, ETL-listed aftermarket substitute designed to replace the original Federal Pacific NA240 in Stab-Lok load centers.
How much panel space does the NA240 require?
As an NA series breaker, it features full-size construction measuring 1 inch per pole. Being a 2-pole device, it requires 2 inches of total mounting space on the Stab-Lok bus bar.
Will the NA240 fit in a Federal Pioneer Stab-Lok panel?
Yes. Federal Pioneer is the Canadian brand equivalent for Federal Pacific Electric. The Stab-Lok connection interface is identical, allowing this breaker to physically mount in both Federal Pacific and Federal Pioneer enclosures.
What is the difference between Federal Pacific NA and NC series breakers?
The NA series consists of full-size breakers at 1 inch per pole, whereas the NC series features a thin, half-size design at 0.5 inches per pole. The NA240 cannot be used if your panel space or stab configuration specifically requires an NC series device.
Why are original Federal Pacific Stab-Lok breakers considered a safety hazard?
Legacy FPE Stab-Lok breakers have a documented history of failing to trip during short-circuit or overload conditions. Electricians frequently replace original FPE hardware or perform full panel upgrades to mitigate potential fire risks.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 28 reviews.
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Rating
28 reviews
- JMJimmy M.Verified BuyerReviewingFederal Pacific NA230 - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26NA230-30
Breaker arrived well packaged and sealed. Installed easily and working great for the customer.
- JEJames E.Verified BuyerReviewingFederal Pacific NA250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Satisfactory
Fast shipping and exactly as expected
- EDErik D.Verified BuyerReviewingFederal Pacific NA250 - 50A 2 Pole Miniature Circuit BreakerI do not recommend this productRated 1 out of 5 stars7/21/26Result of FP
Breakers were wrong size and could not be useful....lost monies.
- JLJeff L.Verified BuyerReviewingFederal Pacific NA20 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/22/26Hard to find breaker
Fit perfectly. Great service
- PPPaul P. J.Verified BuyerReviewingFederal Pacific NA20 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/27/25perfect ...
all is great in the universe the FP 20A Breaker worked perfect.