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Siemens BQ2B025 Molded Case Circuit Breaker
- 25A
- 2 Pole
- Bolt-On
Siemens
BQ2B025
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ2B025
Quantity
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Siemens BQ2B025 - 25A 2 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens BQ2B025 - 25A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ2B025 |
| Series | BQ |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | BQ |
|---|---|
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Common Trip, Insta-Wire |
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Siemens BQ2B025 - 25A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ2B025-R |
| Series | BQ |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | BQ |
|---|---|
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Common Trip, Insta-Wire |
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Description
Built for commercial applications, the Siemens BQ2B025 is a 2-pole, 25-amp molded case circuit breaker. It delivers dependable thermal-magnetic protection for branch circuits, preventing damage from overloads and short circuits. This bolt-on model installs securely into Siemens P1, P2, and P3 panelboards. It is also a recognized substitute for BAB2025, THQB2125, and QOB225 breakers. Featuring a 10 kAIC rating at 120/240 VAC, the breaker includes Insta-Wire technology and load side lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ2B025 |
| Series | BQ |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | BQ |
|---|---|
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Common Trip, Insta-Wire |
Product FAQs
7 answersWhich panelboards are compatible with the BQ2B025?
This bolt-on breaker is designed for direct bus connection in Siemens P1, P2, and P3 series commercial panelboards. It is not compatible with standard residential load centers that require plug-on QP breakers.
What is the difference between the BQ2B025, BQ2B025H, and HB2B025?
These models share the same physical frame and 25A rating but offer different interrupting capacities. The standard BQ2B025 provides 10kAIC, the BQ2B025H provides 22kAIC, and the HB2B025 provides 65kAIC at 120/240VAC.
Is the BQ2B025 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Can this breaker be used for high-intensity discharge lighting?
Yes, the BQ2B025 is HID rated, making it suitable for switching high-intensity discharge lighting loads.
Is the 25A BQ2B025 SWD rated for switching fluorescent lighting?
No, the Switching Duty (SWD) rating for the Siemens BQ series only applies to the 15A and 20A models.
Is the BQ2B025 approved for reverse feed applications?
Yes, standard Siemens BQ breakers are suitable for back-feeding unless the terminals are specifically stamped with Line and Load markings.
Does the BQ2B025 require a specific mounting hardware kit?
As a bolt-on breaker, it mounts directly to the panelboard bus using the integrated mounting screws. No additional mounting hardware kits are required for standard P1, P2, or P3 panel installations.
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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 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.