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Siemens BQ3B080 Molded Case Circuit Breaker
- 80A
- 3 Pole
- Bolt-On
Siemens
BQ3B080
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ3B080
Quantity
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Siemens BQ3B080 - 80A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens BQ3B080 - 80A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ3B080 |
| Series | BQ |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 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, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
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Siemens BQ3B080 - 80A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ3B080-R |
| Series | BQ |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 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, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
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Description
Built for robust commercial and industrial power distribution, the Siemens BQ3B080 provides 80 amps of thermal-magnetic protection across three poles. This bolt-on molded case circuit breaker is rated for 10kAIC at 240VAC, ensuring safe interruption of fault currents. It is engineered for seamless integration into Siemens P1, P2, and P3 panelboards, offering a secure mechanical and electrical connection. The unit features common trip functionality and is HACR rated for HVAC applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ3B080 |
| Series | BQ |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 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, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhich electrical panelboards are compatible with the Siemens BQ3B080?
This bolt-on breaker is engineered for direct installation into Siemens P1, P2, and P3 panelboards. Because Siemens acquired ITE, it is also fully compatible with legacy ITE panelboards that require BQ frame bolt-on breakers.
Can I use the BQ3B080 to replace an older ITE-branded breaker?
Yes. Siemens continues to manufacture the BQ series to the exact same physical and electrical specifications as the original ITE breakers. The Siemens BQ3B080 serves as a direct form, fit, and functional replacement for an ITE breaker of the same catalog number.
Are there direct alternatives if my application requires a higher interrupting capacity?
Yes, Siemens offers higher AIC versions within the exact same BQ frame size and bolt-on configuration. You can upgrade to catalog number BQH3B080 for a 22kAIC rating or HB3B080 for a 65kAIC rating at 240VAC.
Will the BQ3B080 fit into a standard residential Siemens load center?
No, standard Siemens residential load centers typically require EQ-P or QP style plug-on breakers. The BQ3B080 features a bolt-on connection designed specifically for commercial and industrial panelboards.
What wire sizes and materials are supported by the load lugs on this breaker?
The factory-installed load side lugs accept 4 to 1/0 AWG for copper (Cu) conductors and 2 to 1/0 AWG for aluminum (Al) conductors.
Is the BQ3B080 breaker HACR rated?
Yes, it carries a strict HACR rating. This means it has been tested and certified by UL for the safe group motor protection required by heating, air conditioning, and refrigeration equipment.
What kind of protection does the BQ3B080 trip unit provide?
This breaker utilizes a fixed, non-interchangeable thermal magnetic trip mechanism with Long-Time and Instantaneous (LI) functions. The thermal element provides a delayed trip for sustained overloads, while the magnetic element trips instantaneously to clear short-circuit faults.
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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.