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Federal Pacific NB111050 Molded Case Circuit Breaker
- 50A
- 1 Pole
- Bolt-On
Federal Pacific
NB111050
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NB111050
Quantity
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Federal Pacific NB111050 - 50A 1 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Federal Pacific NB111050 - 50A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NB111050 |
| Series | NB |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NB Panelboards, NBLP Panelboards |
| Wire Gauge | 14-2 AWG (Al/Cu) |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Sold out
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Federal Pacific NB111050 - 50A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NB111050-R |
| Series | NB |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NB Panelboards, NBLP Panelboards |
| Wire Gauge | 14-2 AWG (Al/Cu) |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
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Description
Designed to maintain operational safety in older facilities, the Federal Pacific NB111050 is a 50A single-pole circuit breaker. It provides robust thermal-magnetic protection for commercial and industrial applications. This breaker mounts into discontinued Federal Pacific NB and NBLP panelboards, offering a precise fit without modifications. When upgrading or replacing, it crosses over to the Connecticut Electric UBIF150NB substitute. With a 10kAIC rating at 120VAC, it handles standard faults.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NB111050 |
| Series | NB |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NB Panelboards, NBLP Panelboards |
| Wire Gauge | 14-2 AWG (Al/Cu) |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
5 answersWhich panelboards accept the NB111050 circuit breaker?
This bolt-on breaker is designed exclusively for legacy Federal Pacific NB and NBLP series panelboards. It will not fit standard Stab-Lok residential load centers.
Do I need to purchase load side lugs separately for the NB111050?
No, the breaker includes factory-installed load side lugs that accept 14 AWG to 2 AWG aluminum or copper wire.
Can the trip settings on the NB111050 be adjusted in the field?
No, the thermal magnetic trip unit is completely fixed. The long time and instantaneous (LI) functions are factory calibrated and cannot be modified by the user.
Are there modern cross-reference replacements for the Federal Pacific NB111050?
Yes, Connecticut Electric manufactures modern, UL-listed substitute breakers for the legacy FPE NB frame, such as the UBIF150NB, which can be used when upgrading or replacing older units.
Does the NB111050 require a separate mounting kit?
No additional mounting kit is required if the panelboard hardware is intact. The breaker bolts directly to the busbar in compatible Federal Pacific NB and NBLP commercial panelboards.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 18 reviews.
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Rating
18 reviews
- MMMike M.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/2/26100amp federal pacific breaker
So far the breaker works as expected
Just good to know some of these old federal are still available.
Thank you
- SGscott g.Verified BuyerReviewingFederal Pacific NB111020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/26/26Hard to find breakers
Had a project at a school built in the 1960’s and thought we were up a creek when confronted with ancient FPE commercial panels. Luckily we found what we needed with Suoerbreakers.
- BFBarry F.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/13/26Hard to find circuit breaker
Item was as described.
- WWWilliam W.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/9/26Exactly what I needed.
Awesome! Packaging and delivery were good. Bolted in and worked perfectly!!)
- GHGary H.Verified BuyerReviewingFederal Pacific NB125 - 125A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26Federal Pacific NB125 2 Pole Circuit Breaker
Federal Pacific NB125 2 Pole Circuit Breaker
Great product and excellent price and warranty.