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Eaton / Cutler-Hammer BAB2045 Miniature Circuit Breaker
- 45A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
BAB2045
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BAB2045
Quantity
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Eaton / Cutler-Hammer BAB2045 - 45A 2 Pole Miniature Circuit Breaker
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Description
Engineered for commercial environments, the BAB2045 provides 10kAIC interrupting capacity at 120/240V. This two-pole Quicklag unit mounts securely into Eaton Pow-R-Line, Westinghouse, and legacy Cutler-Hammer panelboards. Featuring fixed thermal and magnetic trip settings, it serves as an exact replacement for older QNBL models. The HACR-rated construction accommodates 14-4 AWG copper or aluminum wiring, making it a versatile choice for HVAC equipment and general facility distribution.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BAB2045 |
| Series | BAB |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 24VDC, 48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24VDC, 5kA @ 48VDC, 3.8kA @ 62.5VDC |
| Frame Type | BAB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton Pow-R-Line Panelboards, Westinghouse Panelboards, Cutler-Hammer 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 | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
5 answersWhich panelboards are compatible with the BAB2045 circuit breaker?
The BAB2045 is a bolt-on breaker designed for use in Eaton Pow-R-Line commercial panelboards. It is also fully backwards compatible with legacy Westinghouse and Cutler-Hammer panelboards that require BAB frame bolt-on breakers.
Can I install the BAB2045 in a standard residential load center?
No. The BAB2045 features a bolt-on connection designed for commercial panelboards. It will not fit in standard plug-on residential load centers, such as Eaton BR or CH series enclosures.
Is there a 22kAIC version of the BAB2045 available?
Yes. If your system requires a higher interrupting rating, the Eaton QBHW2045 is the direct 22kAIC equivalent to the standard 10kAIC BAB2045. Both share the same physical dimensions and bolt-on mounting style.
Do I need a separate mounting kit to install the BAB2045 in a Pow-R-Line panelboard?
No, the BAB2045 is designed to bolt directly to the chassis bus of standard Eaton Pow-R-Line panelboards without the need for an additional mounting kit or adapter.
Is the BAB2045 rated for use with heating, air conditioning, and refrigeration equipment?
Yes, like all Eaton Quicklag breakers in the 15A to 100A range, the BAB2045 is HACR rated for use with HVAC and refrigeration equipment.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 164 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 6/19/26
Customers say these breakers function as intended and arrive quickly. Fast shipping is consistently mentioned across reviews, with many noting timely delivery and secure packaging. Customers appreciate competitive pricing and the availability of items in stock. Products arrive in good condition, well-packaged, and work properly upon installation. Common feedback addresses responsive customer service and reliable order fulfillment. Most customers report smooth purchasing experiences and indicate they will return for future orders.
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Rating
164 reviews
- RSRoss S.Verified BuyerReviewingEaton / Cutler-Hammer BAB1020 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Breakers
The right breakers at a great price.
- JHJason H.Verified BuyerReviewingEaton / Cutler-Hammer BAB3080H - 80A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/16/26Excellent Experience
We placed our first order with superbreakers.com recently for a breaker we weren't able to acquire locally. I ordered the breaker way ahead of time because I've had issues with shipping for products purchased online in the past. The estimate for the item when I initially ordered was 3 days. Without adding an expedited shipping options, the breaker arrived the next day. We installed it this week, and so far so good. In my opinion, they sell quality parts and have excellent turn around time. Very impressed.
- REReliant E. S.Verified BuyerReviewingEaton / Cutler-Hammer BAB1030 - 30A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/13/26easy and quick
quick and always has what I need
- LFLincoln F.Verified BuyerReviewingEaton / Cutler-Hammer BAB3030H - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/26Mstr Electrician
Came on time, works great! Always good quality, dependable service. Thanks again.
- DNDouglas N.Verified BuyerReviewingEaton / Cutler-Hammer BAB2020 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Church
Did the job all is great thank you