Eaton / Cutler-Hammer QBHW3040HS Miniature Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer QBHW3040HS - 40A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Part of the Quicklag family, this 40A miniature circuit breaker provides thermal-magnetic protection for commercial and industrial electrical systems. It features a bolt-on mounting style designed specifically for integration into Eaton Pow-R-Line panelboards. Rated for 240VAC with a 22kA interrupting capacity, the unit includes a factory-installed shunt trip for remote tripping capabilities and is HACR rated for HVAC applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QBHW |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BAB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton Pow-R-Line Panelboards |
| Wire Gauge | 14-4 AWG |
| 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 | Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included, Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
5 answersWhat does the "HS" suffix mean on the QBHW3040HS breaker?
The "HS" suffix indicates that this breaker includes a factory-installed shunt trip. This feature allows the breaker to be tripped remotely using an external control signal.
What is the difference between Eaton BAB and QBHW circuit breakers?
Both are bolt-on breakers designed for Eaton Pow-R-Line panelboards, but they differ in short-circuit interrupting capacity. Standard BAB breakers are rated at 10kAIC, while QBHW breakers offer a higher interrupting rating of 22kAIC.
Can I replace an older Cutler-Hammer QBHW3040HS with a new Eaton QBHW3040HS?
Yes. Eaton acquired Cutler-Hammer, and the breakers are identical in form, fit, and function. The Eaton QBHW3040HS is a direct replacement for the Cutler-Hammer branded version.
Does the shunt trip on the QBHW3040HS require a separate control circuit?
Yes, the internal shunt trip mechanism requires an external voltage source and a control switch, relay, or emergency stop button to send the remote trip signal.
Is the QBHW3040HS suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is tested and approved for use with heating, air conditioning, and refrigeration equipment.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 11 reviews.
- CMCalvin M.Verified BuyerReviewingEaton / Cutler-Hammer QBHW2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 4 out of 5 stars7/22/26SuperBreakers
SuperBreakers haven't disappointed me yet. They always have what I need and very timely deliveries!
- WJWilliam J.Verified BuyerReviewingEaton / Cutler-Hammer QBHW1020 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/2/26Emergency-Overnight Purchase and Delivery
I needed breaker ASAP and SuperBreakers made it happen!
- NSNathan S.Verified BuyerReviewingEaton / Cutler-Hammer QBHW2040S - 40A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/19/26Arrived Just in Time
Always satisfied with my SuperBreakers purchases!
- PMPete M.Verified BuyerReviewingEaton / Cutler-Hammer QBHW2015 - 15A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/25Great service and very helpful
Knowledgable staff, easy to use website. Quick shipping turnaround.
- BCBrian C.ReviewingEaton / Cutler-Hammer QBHW2020 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/9/23plug & play
Your website is very user friendly parts arrived promptly exact same parts no issues