Eaton / Challenger BQ3D050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Quantity
Eaton / Challenger BQ3D050 - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed to support heavy-duty commercial loads, the Eaton BQ3D050 is a robust 50-amp molded case circuit breaker. It provides essential long-time and instantaneous trip functions to keep legacy electrical systems operating safely. Servicing older infrastructure is straightforward with this exact replacement. The bolt-on configuration fits perfectly into Challenger, Westinghouse, and Eaton BAB panelboards, replacing the BAB3050 without the need for adapter kits.Specifications
| Brand | Eaton / Challenger |
|---|---|
| Series | BQ |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Challenger Panelboards, Eaton BAB Panelboards, Westinghouse Panelboards |
| Wire Gauge | 8-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
5 answersWhich panelboards are approved for use with the BQ3D050 circuit breaker?
This breaker is compatible with legacy Challenger and Westinghouse panelboards, as well as Eaton BAB series panelboards. Always verify your specific panel's labeling to confirm BQ series breakers are listed for use.
What wire sizes are accepted by the terminal lugs on the BQ3D050?
The lugs accommodate wire gauges from 8 AWG to 2 AWG. You must select the appropriate conductor size and material for a 50-amp circuit in accordance with the National Electrical Code (NEC).
Can the trip curve on the BQ3D050 be adjusted for specific loads?
No, this is a fixed thermal-magnetic circuit breaker. The long-time and instantaneous (LI) trip functions are factory-calibrated and cannot be field-adjusted.
How does the thermal-magnetic trip mechanism operate in the BQ3D050?
The thermal component provides long-time protection by responding to sustained overloads, while the magnetic component provides instantaneous protection to quickly clear short circuits.
Why is this breaker listed under both Eaton and Challenger brands?
Challenger is a legacy brand that was acquired by Eaton Cutler-Hammer. Eaton continues to support these systems, so this breaker may be branded as Eaton, Cutler-Hammer, or Challenger while maintaining the exact same physical and electrical specifications.
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 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.