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Eaton / Cutler-Hammer BQ2402120 20/40A Quadplex Miniature Circuit Breaker
- 20/40A
- 4 Pole
- Plug-On
Eaton / Cutler-Hammer
BQ2402120
20/40A Quadplex Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BQ2402120
Quantity
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Eaton / Cutler-Hammer BQ2402120 - 20/40A Quadplex Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer BQ2402120 - 20/40A Quadplex Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BQ2402120 |
| Series | BQ |
| Amperage | 20/40A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Type BR Load Centers |
| 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 |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Rejection Tab |
| Standards | CSA C22.2 No. 5, Federal Specification W-C375, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Sold out
Quantity
Eaton / Cutler-Hammer BQ2402120 - 20/40A Quadplex Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BQ2402120-R |
| Series | BQ |
| Amperage | 20/40A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Type BR Load Centers |
| 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 |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Rejection Tab |
| Standards | CSA C22.2 No. 5, Federal Specification W-C375, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
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Description
Built for residential and commercial applications, the BQ2402120 delivers high-density circuit protection by combining two 20A single-pole circuits and one 40A two-pole circuit into a single device. This plug-on quadplex breaker installs into Eaton BR series load centers, making it an ideal solution when panel space is limited. It provides reliable thermal-magnetic trip functions with a 10 kAIC interrupt rating at 120/240V and features independent trip operation for enhanced safety.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BQ2402120 |
| Series | BQ |
| Amperage | 20/40A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Type BR Load Centers |
| 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 |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Rejection Tab |
| Standards | CSA C22.2 No. 5, Federal Specification W-C375, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhich electrical panels are compatible with the BQ2402120 quadplex breaker?
This breaker is designed for use in Eaton, Cutler-Hammer, Bryant, Westinghouse, and Challenger Type BR load centers. It must be installed in panel positions with notched bus stabs that accept CTL (Circuit Total Limiting) breakers with rejection tabs.
How does the independent trip function operate on the BQ2402120?
The 40A center poles trip together as a 2-pole circuit, but they trip independently of the 20A outside poles. A fault on one of the 20A circuits or the 40A circuit will not shut down the other operational circuits.
Is the BQ2402120 rated for HVAC equipment or switch duty?
Yes, this quadplex breaker is HACR rated for use with heating, air conditioning, and refrigeration equipment. Additionally, the 20A single-pole circuits are SWD (Switch Duty) rated for switching 120V fluorescent lighting loads.
How much panel space is required to install the BQ2402120?
This quadplex breaker requires two standard 1-inch spaces in a compatible Type BR load center to provide four total circuits, making it ideal for high-density circuit protection when panel space is limited.
What is the purpose of the rejection tab on the BQ2402120?
The rejection tab is a CTL (Circuit Total Limiting) safety feature. It prevents the breaker from being installed in panel slots not designed for tandem or quadplex breakers, ensuring the panel's maximum circuit capacity is not exceeded.
Can the BQ2402120 replace older Bryant or Westinghouse quad breakers?
Yes, Eaton BQ series breakers are UL approved genuine replacements for legacy Type BR load centers manufactured by Bryant, Westinghouse, and Challenger.
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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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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 73 reviews.
Reviews Summary
Generated by AI from 67 most recent customer reviews
Last updated 6/3/26
Customers say these breakers arrive quickly and fit perfectly for their electrical needs. Fast shipping and competitive pricing are frequently mentioned, with many users appreciating the availability of hard-to-find and older-style breakers. The products are well-packaged and arrive in good condition. Most customers report successful installations and reliable performance. A few note missing items from orders or concerns about product condition, though the majority express satisfaction with their purchases and indicate they would order again.
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Rating
73 reviews
- HSHector S.Verified BuyerReviewingSiemens BQ3B100H - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/27/26Perfect replacement
Fit perfectly and good price
- AFAnthony F.Verified BuyerReviewingSiemens BQ2B020 - 20A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/25/26works as expected
works as expected
- MSMike S.Verified BuyerReviewingEaton / Cutler-Hammer BQ250250 - 50/50A Quadplex Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/26Electrical company
Breaker worked awesome thank you very much
- PEPhilip E.Verified BuyerReviewingSiemens BQ3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/10/26Siemens BQ3B020
The breaker arrived as described and on time. It works as expected. I will order from SuperBreakers again in the future without hesitation.
- PLPaul L.Verified BuyerReviewingSiemens BQ1B020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Breaker
Quick shipping. Exact fit.