Eaton / Cutler-Hammer QBHW2045 Miniature Circuit Breaker
- 45A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
QBHW2045
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QBHW2045
Quantity
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Eaton / Cutler-Hammer QBHW2045 - 45A 2 Pole Miniature Circuit Breaker
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Description
Part of the Quicklag family, the Eaton QBHW2045 is a 45A, 2-pole miniature circuit breaker providing reliable thermal-magnetic protection for commercial systems. This breaker installs into Eaton Pow-R-Line panelboards via a secure bolt-on connection. It serves as a direct replacement for the legacy QBH2045, offering a seamless upgrade. Featuring a 22 kAIC rating at 120/240VAC, this unit is HACR rated for HVAC applications. It includes load side lugs and accepts 14-4 AWG wire.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QBHW |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| 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 |
| 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, Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards are compatible with the QBHW2045?
The QBHW2045 is a bolt-on miniature circuit breaker designed specifically for installation in Eaton Pow-R-Line 1a and 2a panelboards.
What is the difference between the BAB2045 and the QBHW2045?
Both are 45A, 2-pole bolt-on breakers that fit the same Eaton Pow-R-Line panelboards, but they feature different interrupting ratings. The BAB2045 is rated at 10kAIC, while the QBHW2045 provides a higher interrupting capacity of 22kAIC.
Is the Eaton QBHW2045 HACR rated?
Yes, this Quicklag circuit breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment branch circuits.
What type of wire is compatible with the QBHW2045 box lugs?
The load side box lugs on this breaker accept either copper or aluminum conductors ranging from 14 AWG to 4 AWG.
Does the QBHW2045 feature an adjustable trip setting?
No, this breaker utilizes a fixed thermal-magnetic trip unit with non-interchangeable long-time and instantaneous trip functions.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 11 reviews.
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Rating
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