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Eaton / Cutler-Hammer BQ240250 40/50A Quadplex Miniature Circuit Breaker
- 40/50A
- 4 Pole
- Plug-On
Eaton / Cutler-Hammer
BQ240250
40/50A Quadplex Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BQ240250
Quantity
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Eaton / Cutler-Hammer BQ240250 - 40/50A Quadplex Miniature Circuit Breaker
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Description
Designed to optimize panel capacity, this 40/50A quadplex breaker provides one 2-pole 40A circuit and one 2-pole 50A circuit within a standard two-space footprint. It serves as an excellent space-saving solution for residential and commercial applications. The plug-on configuration is fully compatible with Eaton BR, Bryant, Challenger, and Westinghouse load centers. It features an independent trip mechanism, a 10kAIC interrupt rating, and a rejection tab for proper installation.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BQ240250-R |
| Series | BQ |
| Amperage | 40/50A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton BR Load Centers, Bryant Load Centers, Westinghouse Load Centers, Challenger 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 | 60C to 75C |
| Construction Features | HACR Rated, Independent Trip, Rejection Tab |
Product FAQs
6 answersWhat is the difference between the BQ240250 and a BQC240250 breaker?
The Type BQ series features an independent trip mechanism, meaning each of the four poles trips individually during an overcurrent event. Type BQC breakers feature a common trip mechanism where paired poles are internally linked to trip simultaneously, which is typically required for 240V loads.
Does the BQ240250 require a notched bus bar for installation?
Yes. This is a Circuit Total Limitation (CTL) breaker equipped with a rejection tab on the bus connection side. It can only be installed in load center positions that have notched bus stabs specifically designed to accept tandem or quadplex breakers.
Can I install this breaker in a Square D or Siemens load center?
No. The BQ240250 is exclusively designed for Eaton BR, legacy Bryant, Westinghouse, and Challenger load centers. It is not physically compatible or UL listed for use in Square D, Siemens, or GE panels.
Are the 40A and 50A circuits located on the inner or outer poles?
This quadplex breaker is configured with the two 40A circuits on the outside poles and the two 50A circuits on the center poles.
Is this a direct replacement for older Cutler-Hammer BQ240250 breakers?
Yes. Eaton acquired Cutler-Hammer and continues to manufacture the Type BQ series to the original specifications. This breaker serves as an exact, UL listed replacement for legacy Cutler-Hammer models bearing the same catalog number.
Is the independent trip BQ240250 suitable for multiwire branch circuits?
Yes. The independent trip design is often utilized for multiwire branch circuits (MWBC) sharing a neutral. Note that the NEC requires identified handle ties to provide a common disconnect for the ungrounded conductors, even if a common trip is not required.
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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.