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Siemens BQ2B030 Molded Case Circuit Breaker
- 30A
- 2 Pole
- Bolt-On
Siemens
BQ2B030
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ2B030
Quantity
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Siemens BQ2B030 - 30A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Siemens BQ2B030 - 30A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ2B030 |
| Series | BQ |
| Amperage | 30A |
| 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 |
| 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 Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Sold out
Quantity
Siemens BQ2B030 - 30A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ2B030-R |
| Series | BQ |
| Amperage | 30A |
| 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 |
| 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 Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
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Description
Built for demanding environments, this 30A molded case circuit breaker provides essential overcurrent protection. The rugged BQ series construction is optimized for continuous commercial facility operations. Mounting into Siemens panelboards is straightforward thanks to the standard bolt-on configuration. Electricians frequently utilize this model as a cross-reference for BAB2030 or THQB2130 applications. Carrying a 10kAIC rating at 120/240VAC, the device includes Insta-Wire terminals.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ2B030-R |
| Series | BQ |
| Amperage | 30A |
| 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 |
| 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 Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
8 answersCan I install this breaker in a residential plug-on load center?
No, the BQ2B030 is a bolt-on circuit breaker. It is specifically designed for use in compatible Siemens commercial panelboards that require bolted bus connections, and will not fit in standard residential plug-on load centers.
Will the BQ2B030 fit in place of a BQD breaker?
While BQ and BQD breakers share the same 1-inch per pole footprint, they have different voltage and interrupting capacities. The BQ2B030 is rated for up to 240VAC and 10kAIC, whereas BQD breakers are designed for 480Y/277VAC systems and higher fault currents. Always verify your panel requirements before substituting frame types.
Is this breaker HACR rated for HVAC equipment?
Yes, the Siemens BQ2B030 carries a Heating, Air Conditioning, and Refrigeration (HACR) rating, making it suitable for protecting branch circuits connected to compatible HVAC equipment.
Does the BQ2B030 carry a Switching Duty (SWD) or High Intensity Discharge (HID) rating?
No. Siemens typically limits SWD ratings to 15A and 20A single-pole BQ breakers, and HID ratings generally apply to single-pole models or higher voltage variants. This 30A, 2-pole breaker does not carry these specific lighting application ratings.
How is the breaker secured during installation?
The BQ2B030 utilizes a bolt-on mounting configuration. It fastens directly to the panelboard busbar using bolted straps, which provides a secure, vibration-resistant electrical connection.
Are the wire lugs included with the breaker?
Yes, the breaker comes equipped with factory-installed load-side lugs. The terminals accept 14-6 AWG copper conductors or 12-6 AWG aluminum conductors.
Can this breaker replace older ITE branded BQ breakers?
Yes. Siemens acquired ITE and continued manufacturing the BQ series. The modern Siemens BQ2B030 serves as a direct, compatible replacement for older ITE BQ2B030 models installed in legacy panelboards.
What type of overcurrent protection does this breaker provide?
The breaker features a non-interchangeable, thermal-magnetic trip unit with fixed Long-Time (L) and Instantaneous (I) trip functions. The thermal element responds safely to sustained overloads, while the magnetic element trips instantly during short circuits to protect your system.
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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.