Free Shipping Over $99
Eaton / Cutler-Hammer BAB2045S Miniature Circuit Breaker
- 45A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
BAB2045S
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BAB2045S
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Cutler-Hammer BAB2045S - 45A 2 Pole Miniature Circuit Breaker
New
Quantity
Similar Items
40A 2 Pole Miniature Circuit Breaker
35A 2 Pole Miniature Circuit Breaker
60A 2 Pole Miniature Circuit Breaker
Description
Integrating remote shutdown capabilities, this Quicklag model includes a factory-installed shunt trip mechanism operating at 120-240VAC. The two-pole configuration delivers standard 10kAIC protection while allowing automated or emergency tripping from a remote control switch. It installs seamlessly into Eaton Pow-R-Line and legacy Westinghouse enclosures. Rated for HACR applications, this non-interchangeable trip unit effectively replaces older QNBL breakers requiring shunt functionality.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BAB2045S |
| 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 |
| Wire Gauge | 14-4 AWG (Al/Cu) |
| 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 | Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip (120-240VAC) |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhich panelboards are compatible with the BAB2045S circuit breaker?
The BAB2045S is a bolt-on circuit breaker designed for use in Eaton Pow-R-Line panelboards and legacy Westinghouse panelboards that accept Quicklag BAB-frame breakers.
What does the "S" suffix in the BAB2045S catalog number indicate?
The "S" suffix indicates that this breaker includes a factory-installed 120VAC shunt trip accessory. This allows the breaker to be tripped remotely by applying a 120V control signal.
How does the BAB2045S connect to the panelboard bus?
The BAB2045S is a Quicklag bolt-on breaker. It secures directly to the panelboard bus using a bolted connection, providing a secure, vibration-resistant contact compared to standard plug-on breakers.
Can I use the Eaton BAB2045S to replace an older Cutler-Hammer or Westinghouse breaker?
Yes. Eaton acquired the Cutler-Hammer and Westinghouse distribution equipment lines. The Eaton BAB2045S is a direct, exact replacement for older Cutler-Hammer and Westinghouse BAB2045S breakers.
What is the difference between Eaton BAB and QBHW circuit breakers?
Both are Quicklag bolt-on breakers with identical physical dimensions. The difference is their interrupting capacity: BAB breakers are rated at 10kAIC, while QBHW breakers are rated at 22kAIC.
Is the BAB2045S HACR rated?
Yes, Eaton Quicklag BAB breakers from 15A to 100A are HACR rated, meaning they are suitable for use with heating, air conditioning, and refrigeration equipment.
Does the BAB2045S have an adjustable trip setting?
No, this breaker features a fixed thermal-magnetic trip unit. The long-time and instantaneous trip functions are factory set and cannot be adjusted in the field.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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.
Search
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