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Siemens BQ2B02000S01 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Siemens
BQ2B02000S01
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ2B02000S01
Quantity
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Siemens BQ2B02000S01 - 20A 2 Pole Molded Case Circuit Breaker
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Description
Offering remote shutdown functionality, the Siemens BQ2B02000S01 is a 2-pole, 20-amp molded case circuit breaker featuring an integrated 120VAC shunt trip. It delivers thermal-magnetic protection with a 10kAIC rating at 120/240VAC for commercial and industrial applications. The device mounts into Siemens P1, P2, and P3 panelboards using a robust bolt-on connection. This HACR-rated breaker includes load side lugs and provides dependable long-time and instantaneous (LI) trip response.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ2B02000S01 |
| Series | BQ |
| Amperage | 20A |
| 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 P1, P2, P3 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 | Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs, Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhat does the S01 suffix mean on the Siemens BQ2B02000S01?
The S01 suffix indicates that the breaker is equipped with a factory-installed 120V AC shunt trip. This allows the breaker to be tripped remotely for emergency shutdown or automated control systems.
Is the BQ2B02000S01 compatible with older ITE panelboards?
Yes, Siemens BQ frame breakers are backwards compatible with legacy ITE panelboards that accept bolt-on BQ breakers, in addition to modern Siemens P1, P2, and P3 panelboards.
How does the integrated shunt trip operate on this breaker?
The factory-installed shunt trip requires a separate 120V AC control power source. When voltage is applied to the shunt trip leads, the internal mechanism activates and mechanically opens the breaker contacts.
Can the trip settings on the BQ2B02000S01 be adjusted in the field?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous trip functions are factory set and cannot be modified.
Are the load lugs included with the BQ2B02000S01?
Yes, the breaker comes standard with load-side lugs installed. They are rated for 14 to 6 AWG copper or 12 to 6 AWG aluminum conductors.
Does the BQ2B02000S01 provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic breaker with a shunt trip. It provides overload and short-circuit protection but does not include GFCI or AFCI circuitry.
What is the UPC for cross-referencing the BQ2B02000S01?
The standard UPC for this 20A shunt trip breaker is 783643237728. It may also be listed under legacy ITE part numbers with the exact same catalog designation.
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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.