Federal Pacific NQ111050 Molded Case Circuit Breaker
- 50A
- 1 Pole
- Bolt-On
Quantity
Federal Pacific NQ111050 - 50A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed to maintain legacy infrastructure, this single-pole 50A breaker delivers essential overcurrent protection for commercial environments utilizing older Federal Pacific equipment. Installation is straightforward into existing NBLP and NQLP panelboards, providing a seamless fit. It serves as a reliable cross-reference replacement for UBIF50NB and NB111050 models. With a 10kA interrupting capacity at 120V, the device includes HACR certification for safe operation with HVAC loads.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NQ111050-R |
| Series | NQ |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NQLP Panelboards, Federal Pacific NBLP Panelboards |
| Wire Gauge | 8-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 8 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | HACR Rated |
Product FAQs
6 answersWhich panelboards accept the Federal Pacific NQ111050 circuit breaker?
This N-Frame breaker is specifically designed to bolt into legacy Federal Pacific NQLP and NBLP commercial panelboards.
Will this breaker fit in a residential FPE Stab-Lok load center?
No. The NQ111050 is a bolt-on breaker built for commercial applications. It is not compatible with residential Stab-Lok panels, which require plug-on Stab-Lok style breakers.
What are the direct cross-reference replacements for the NQ111050?
The NQ111050 serves as a direct replacement for discontinued Federal Pacific NB111050 and Connecticut Electric UBIF50NB models.
How is the NQ111050 secured inside the electrical panel?
It utilizes a bolt-on connection, meaning it must be mechanically fastened to the panelboard busbar rather than snapping into place. Ensure the panel is fully de-energized before installation.
What does the LI trip function code mean on this breaker?
The LI designation indicates that the thermal-magnetic trip unit provides both Long-Time (thermal) protection against gradual overloads and Instantaneous (magnetic) protection against sudden short circuits. Both settings are fixed on this model.
Is it safe to install replacement breakers in older Federal Pacific panels?
While original Federal Pacific Electric (FPE) panels are often flagged during inspections due to historical safety concerns with their residential Stab-Lok line, installing a proper bolt-on replacement breaker like the NQ111050 can safely restore functionality to commercial NQLP and NBLP distribution systems. Always consult a licensed electrician to evaluate your specific panel.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
- GEGaron E.ReviewingSquare D NQ442L2C Panel Board InteriorI recommend this productRated 4 out of 5 stars6/10/22Thank You!
Thank You!
- TRTerry R.ReviewingSquare D NQ442L2C Panel Board InteriorI recommend this productRated 5 out of 5 stars11/24/20Outstanding.
I was in need of a new Square D panel in an emergency due to an electrical fire. Super breaker had exactly what I needed at the best possible price. I placed my order online which was fast and easy in my panel arrive in three days.
- KBKevin B.Rated 5 out of 5 stars3/20/19Quick and easy
Quick and easy