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Siemens BQ2B015QX Molded Case Circuit Breaker
- 15A
- 2 Pole
- Bolt-On
Siemens
BQ2B015QX
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ2B015QX
Quantity
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Siemens BQ2B015QX - 15A 2 Pole Molded Case Circuit Breaker
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Description
Designed to streamline commercial installations, the Siemens BQ2B015QX features load-side quick connect terminals for faster wiring. This 15-amp, 2-pole molded case circuit breaker provides reliable thermal-magnetic protection for general purpose branch circuits. It mounts securely into Siemens P1, P2, and P3 panelboards. The bolt-on design ensures a tight, vibration-resistant connection for industrial power distribution systems.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ2B015QX |
| Series | BQ |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Panelboards (P1, P2, P3) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Quick Connect Terminals Included |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
6 answersCan I use the BQ2B015QX in a standard Siemens residential load center?
No. The BQ2B015QX is a bolt-on breaker designed specifically for commercial Siemens P1, P2, and P3 panelboards. For residential Siemens load centers, you typically need a plug-on QP series breaker.
What does the QX suffix mean in the BQ2B015QX catalog number?
The QX suffix indicates that the breaker is equipped with load-side quick-connect terminals instead of standard mechanical lugs. This feature is designed to speed up wiring in commercial installations.
What is the difference between the BQ2B015 and the BQ2B015QX?
Both are 15A, 2-pole BQ frame breakers, but the QX version features quick-connect terminals on the load side for faster wiring, whereas the standard BQ2B015 uses traditional mechanical box lugs.
Does the BQ2B015QX require a specific wire material for installation?
You can use either copper (Cu) or aluminum (Al) conductors. Ensure you use the correct gauge for the material (14 to 6 AWG for copper, or 12 to 6 AWG for aluminum) and apply an oxide inhibitor if using aluminum wire to prevent corrosion.
What type of protection does the BQ2B015QX provide?
It utilizes a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) trip functions. The thermal element protects against sustained overloads, while the magnetic element provides fast response to short circuits.
How is the BQ2B015QX secured inside the panelboard?
It features a bolt-on mounting style. You must use the screws provided with the panelboard to attach the breaker line terminals directly to the panelboard bus, ensuring a tight, vibration-resistant connection.
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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.