Eaton / Westinghouse HQNP3040 Miniature Circuit Breaker
- 40A
- 3 Pole
- Plug-On
Quantity
Eaton / Westinghouse HQNP3040 - 40A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
A drop-in replacement for aging electrical systems, the Eaton HQNP3040 is a 3-pole, 40A plug-on breaker. It installs seamlessly into older Westinghouse and Eaton Quicklag load centers, providing a reliable solution for maintaining existing infrastructure. Engineered to match original specifications, this legacy unit is the direct predecessor to the HQP3040. It features thermal-magnetic trip technology, a 10kAIC rating at 240VAC, and is HACR rated for commercial HVAC applications.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | HQNP3040-R |
| Series | HQN |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Westinghouse/Eaton Quicklag Load Centers and 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 Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Handle Lock |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
5 answersWhich panelboards are compatible with the HQNP3040 circuit breaker?
This breaker is designed to fit legacy Westinghouse and Eaton Cutler-Hammer Quicklag load centers and panelboards, specifically Type P and PL panels.
Is there a newer direct replacement for the HQNP3040?
Yes, the legacy HQNP3040 is directly cross-referenced to the newer Eaton HQP3040 plug-on circuit breaker.
Does the HQNP3040 use a plug-on or bolt-on mounting style?
The HQNP3040 is a plug-on circuit breaker. While the Quicklag family includes bolt-on variants, the HQNP series specifically utilizes a plug-on connection for installation.
What does the LI trip function code mean on the HQNP3040?
The LI designation indicates that the breaker uses fixed thermal and magnetic elements to provide Long-Time overload protection and Instantaneous short-circuit protection.
Can the HQNP3040 be used for commercial HVAC circuits?
Yes, this breaker is HACR rated, meaning it is tested and approved for safe use with heating, air conditioning, and refrigeration equipment.
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