Eaton / Westinghouse HQNPA3100 Miniature Circuit Breaker
- 100A
- 3 Pole
- Plug-On
Quantity
Eaton / Westinghouse HQNPA3100 - 100A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Maintaining legacy industrial panels is straightforward with the Eaton HQNPA3100. This 100-amp, three-pole miniature circuit breaker provides essential overcurrent protection for older commercial facilities. The plug-on design installs into existing Westinghouse and Cutler-Hammer Quicklag Type P panelboards. It is the approved substitute for the obsolete HQP3100, ensuring exact mechanical and electrical compatibility.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | HQNPA3100-R |
| Series | HQNP |
| Amperage | 100A |
| 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 | 4-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 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 modern circuit breaker replaces the obsolete Westinghouse HQNPA3100?
The Eaton HQP3100 is the direct modern replacement for the legacy Westinghouse HQNPA3100. Both are 100A, 3-pole, plug-on breakers designed for Type P and PL panelboards.
Which panelboards are compatible with the HQNPA3100 circuit breaker?
This breaker is designed specifically for legacy Westinghouse and Eaton Quicklag panelboards, including Type P and Type PL load centers.
Does the HQNPA3100 bolt onto the busbar or plug in?
While some legacy documentation may refer to it as a bolt-on, the HQNPA series actually features a plug-on mounting style designed specifically for Type P and PL panelboards.
Is the HQNPA3100 suitable for 480V systems?
No. This breaker has a maximum voltage rating of 240V AC and cannot be used in 480V or 277V applications.
What does the LI trip function code mean on the HQNPA3100?
The LI designation indicates that the breaker provides Long-Time and Instantaneous trip functions. The long-time function protects against sustained overloads, while the instantaneous function trips immediately during a short circuit.
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