Eaton / Westinghouse QNP2050 Miniature Circuit Breaker
- 50A
- 2 Pole
- Plug-On
Quantity
Eaton / Westinghouse QNP2050 - 50A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Built for commercial and industrial applications, the Eaton QNP2050 is a 2-pole, 50A miniature circuit breaker. It provides reliable thermal-magnetic protection for 120/240VAC systems. This legacy plug-on breaker mounts into Eaton Pow-R-Line, Westinghouse, and Quicklag panelboards without requiring adapters. It serves as an exact fit for older installations and is replaced by the QP2050 model for newer upgrades. Rated at 10kAIC, it features a common trip mechanism and is HACR rated.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | QNP2050-R |
| Series | QNP |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Westinghouse Panelboards, Quicklag Panelboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards are compatible with the QNP2050 circuit breaker?
This breaker is designed to fit Eaton Pow-R-Line panelboards, Quicklag panelboards, and legacy Westinghouse panelboards. It is not compatible with standard Eaton BR or CH residential load centers.
What is the direct replacement for the legacy QNP2050 breaker?
The QNP2050 is a legacy model that has been officially replaced by the Eaton QP2050 circuit breaker for newer upgrades, while still maintaining the exact same fit and function.
What type of wiring is compatible with the QNP2050 box lugs?
The box lug terminals are designed to accept both copper and aluminum conductors ranging from 14 AWG to 4 AWG, making it versatile for various commercial and industrial wiring applications.
How does the QNP2050 protect commercial and industrial circuits?
It utilizes a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) functions. This ensures the breaker trips during sustained overloads and immediately disconnects during severe short circuits.
Does the QNP2050 require any mounting adapters for older Westinghouse panels?
No, this breaker serves as an exact fit for older Westinghouse and Quicklag panelboards without the need for retrofitting or special mounting adapters.
Is the QNP2050 suitable for use with heating and cooling equipment?
Yes, this breaker is HACR rated, meaning it is certified for safe use with heating, air conditioning, and refrigeration equipment.
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