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Eaton / Cutler-Hammer BAB2020S Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
BAB2020S
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BAB2020S
Quantity
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Eaton / Cutler-Hammer BAB2020S - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
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Eaton / Cutler-Hammer BAB2020S - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BAB2020S |
| Series | BAB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 24VDC, 48VDC, 62.5VDC, 80VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24VDC, 5kA @ 48VDC, 5kA @ 62.5VDC, 5kA @ 80VDC |
| 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 (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 Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
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Eaton / Cutler-Hammer BAB2020S - 20A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BAB2020S-R |
| Series | BAB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 24VDC, 48VDC, 62.5VDC, 80VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24VDC, 5kA @ 48VDC, 5kA @ 62.5VDC, 5kA @ 80VDC |
| 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 (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 Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
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Description
Offering both thermal-magnetic protection and remote control, the Eaton BAB2020S is a versatile 2-pole, 20A miniature circuit breaker. It is rated for 120/240VAC applications in commercial environments. This unit installs into Eaton Pow-R-Line, Cutler-Hammer, and Westinghouse panelboards using a reliable bolt-on connection. It serves as a suitable replacement for legacy QNBL components. The built-in 120/208/240VAC shunt trip allows users to open the circuit remotely for safety or automation.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BAB2020S |
| Series | BAB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 24VDC, 48VDC, 62.5VDC, 80VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24VDC, 5kA @ 48VDC, 5kA @ 62.5VDC, 5kA @ 80VDC |
| 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 (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 Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhat panelboards accept the BAB2020S circuit breaker?
This bolt-on miniature breaker fits Eaton Pow-R-Line, Westinghouse, and Cutler-Hammer panelboards designed to accept Quicklag BAB frame circuit breakers.
Does the BAB2020S come with a shunt trip?
Yes, the S suffix indicates this breaker features a factory-installed 120VAC shunt trip. This allows the breaker to be tripped remotely via a control circuit for safety or automation applications.
What wire sizes are compatible with the box lugs on this breaker?
The box lugs on the BAB2020S are rated to accept 14 AWG to 4 AWG aluminum or copper conductors. The unusually large maximum wire size for a 20A breaker allows for easy termination of oversized wires when compensating for voltage drop on long runs.
Can the BAB2020S be used in DC control circuits?
Yes, it is rated for DC applications up to 80VDC with a 5kAIC interrupting rating, making it suitable for specific industrial control panels and battery backup systems.
How does a bolt-on connection differ from a plug-on connection for this frame?
Bolt-on breakers like the BAB2020S use screws to fasten directly to the panelboard bus. This creates a secure, vibration-resistant connection preferred in commercial and industrial environments to prevent arcing or accidental disconnection.
Can I use this Eaton breaker to replace an older Westinghouse BAB2020S?
Yes. Eaton acquired the Cutler-Hammer and Westinghouse distribution equipment lines. This Eaton BAB2020S is a direct, backward-compatible replacement for the legacy Westinghouse and Cutler-Hammer versions.
Does this breaker provide Ground Fault or Arc Fault protection?
No. The BAB2020S uses standard thermal-magnetic trip technology to protect against overloads and short circuits. It is not equipped with personnel GFCI or AFCI functionality.
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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.
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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