Eaton / Westinghouse HQNP3050 Miniature Circuit Breaker
- 50A
- 3 Pole
- Plug-On
Quantity
Eaton / Westinghouse HQNP3050 - 50A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Maintaining legacy electrical infrastructure is simple with the Eaton HQNP3050, a 3-pole, 50A plug-on breaker. It is engineered to fit perfectly into older Westinghouse and Eaton Quicklag Type P and PL panelboards, providing a code-compliant way to service existing installations. Often cross-referenced with its modern replacement, the HQP3050, this breaker guarantees a hassle-free fit. It delivers a 10kAIC capacity at 240VAC and is fully HACR rated for air conditioning and refrigeration.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | HQNP3050-R |
| Series | HQNP |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Westinghouse/Eaton Quicklag Panelboards (Type P, PL) |
| 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 |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
5 answersWhat panelboards are compatible with the HQNP3050?
This breaker is specifically designed to fit legacy Westinghouse and Eaton Cutler-Hammer Quicklag Type P and Type PL panelboards. It is not compatible with modern Pow-R-Line enclosures.
What is the modern replacement for the legacy HQNP3050?
The Eaton HQP3050 is the direct modern cross-reference for the obsolete Westinghouse HQNP3050. It shares the same physical dimensions, mounting style, and Type P and PL panel compatibility.
Can the HQNP3050 be used for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is tested and approved to handle the specific inrush currents of heating, air conditioning, and refrigeration loads.
What protection does the LI trip function provide?
The LI (Long-Time and Instantaneous) designation indicates a thermal-magnetic trip unit. The thermal (Long-Time) element protects against sustained overloads, while the magnetic (Instantaneous) element trips immediately to clear short circuits.
Are HQNP and BAB circuit breakers interchangeable?
No. Although both are part of the Eaton Quicklag family, they are designed for different panelboards. The HQNP fits legacy Type P and PL panels, while the BAB series is a bolt-on breaker used in Pow-R-Line panels.
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