Eaton / Cutler-HammerQBHW3050H
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Eaton / Cutler-Hammer QBHW3045H Miniature Circuit Breaker
- 45A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
QBHW3045H
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QBHW3045H
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Eaton / Cutler-Hammer QBHW3045H - 45A 3 Pole Miniature Circuit Breaker
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Description
Built for commercial and industrial applications, this 45A miniature circuit breaker provides reliable overcurrent protection. It utilizes a bolt-on mounting configuration for secure installation into Eaton Pow-R-Line panelboards and serves as a drop-in replacement for the legacy QBH3045 model. Featuring a 22kAIC rating at 240VAC, this Quicklag series breaker includes a fixed thermal-magnetic trip unit and carries an HACR rating for air conditioning equipment.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QBHW3045H |
| Series | QBHW |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| 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
6 answersWhich panelboards accept the QBHW3045H circuit breaker?
This bolt-on breaker is designed for Eaton Pow-R-Line panelboards, including the PRL1a, PRL1X, PRL2X, PRL3a, and PRL3E series.
What are the terminal torque specifications for the QBHW3045H?
The required torque depends on the wire gauge used. Apply 20 in-lbs for 14 to 10 AWG, 25 in-lbs for 8 AWG, and 27 in-lbs for 6 to 4 AWG conductors.
What wire temperature rating is required for the terminals on this breaker?
Eaton specifies using 60/75C rated conductors to ensure proper installation and secure connections at the box lugs.
Is this 45A Quicklag breaker HACR rated?
Yes, the QBHW3045H is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
Can the QBHW3045H be back fed in a panelboard?
Yes, standard Eaton Quicklag thermal magnetic breakers can be reverse fed because they lack Line and Load markings. An approved retaining bracket must be installed to secure the breaker to the bussing.
Is this the correct replacement for a legacy Cutler-Hammer QBHW3045H?
Yes. Eaton acquired Cutler-Hammer, and this Eaton breaker is the exact replacement for the older Cutler-Hammer version with the same catalog number.
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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