Eaton / Cutler-Hammer QBHW1045 Miniature Circuit Breaker
- 45A
- 1 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer QBHW1045 - 45A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Designed for heavy-duty commercial applications, the Eaton QBHW1045 delivers 45 amps of reliable overcurrent protection. This single-pole Quicklag miniature breaker utilizes fixed thermal-magnetic trip technology to safeguard critical branch circuits. It bolts securely into Eaton Pow-R-Line panelboards, providing a stable connection for industrial environments. This model also serves as a drop-in replacement for discontinued QBH1045 breakers. Featuring a 22 kAIC rating, it is HACR certified.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QBHW |
| Amperage | 45A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC, 5kA @ 48VDC |
| 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 | 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
4 answersWhat panelboards are compatible with the QBHW1045?
This breaker is designed for use in Eaton Pow-R-Line panelboards that accept bolt-on Quicklag breakers.
Can I use the QBHW1045 to replace a standard BAB breaker?
Yes, the QBHW1045 utilizes the same BAB frame and bolt-on mounting as standard BAB breakers. It serves as a direct, upgraded replacement when a higher interrupting capacity of 22kAIC is required.
Are the trip settings on the QBHW1045 adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. The long-time overload and instantaneous short-circuit trip functions are factory-set and cannot be adjusted in the field.
What is the advantage of the bolt-on connection for the QBHW1045?
The bolt-on mounting style secures the breaker directly to the panelboard bus. This provides a highly reliable, vibration-resistant connection that is ideal for heavy-duty commercial and industrial environments.
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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