Siemens B12000S01 Molded Case Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Quantity
Siemens B12000S01 - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens B12000S01 - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B12000S01 |
| Series | BL |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 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 | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Quantity
Siemens B12000S01 - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B12000S01-R |
| Series | BL |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 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 | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Description
Built for commercial distribution, this 20-amp BL type breaker integrates a 120VAC shunt trip mechanism to allow remote circuit interruption. It serves industrial facilities needing automated or emergency power cutoff solutions. Designed to fit Siemens P1 through P5 panelboards, the device utilizes a sturdy bolt-on mounting configuration for stable connectivity. It delivers a 10kA interrupting capacity at 120/240V and is fully HACR and SWD rated for HVAC and lighting control applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B12000S01 |
| Series | BL |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 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 | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Product FAQs
6 answersWhat does the "00S01" suffix on the Siemens B12000S01 catalog number indicate?
The "00S01" suffix denotes a factory-installed 120V AC shunt trip mechanism. This allows the circuit breaker to be opened remotely by a control circuit, which is commonly required for emergency shutdown systems or equipment interlocks.
Can I add a shunt trip in the field to a standard Siemens B120 breaker instead of buying this model?
No. Shunt trips and other internal accessories for Siemens BL-frame breakers are installed at the factory. A standard breaker cannot be safely modified in the field to add a shunt trip.
Which Siemens panelboards will accept the B12000S01 bolt-on breaker?
This BL-type breaker is designed to bolt directly into Siemens P1, P2, P3, P4, and P5 series panelboards.
What voltage is required to activate the remote shunt trip?
The internal shunt trip coil on this specific breaker requires a 120V AC control voltage to activate. Applying an incorrect control voltage can damage the internal coil or fail to open the circuit during an emergency.
Is the B12000S01 rated for use with heating and cooling equipment?
Yes, this breaker is HACR rated. This means it is certified to handle the specific inrush currents and operational demands of heating, air conditioning, and refrigeration equipment.
Can I use this 20-amp breaker as a switch for fluorescent lighting?
Yes. Siemens 15-amp and 20-amp BL breakers carry an SWD (Switching Duty) rating, making them suitable for the daily switching of fluorescent lighting loads without prematurely degrading the contacts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 35 reviews.
- TSTom S.Verified BuyerReviewingSiemens B3100 3 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Superbreakers is our go to!
Great prices, great service and quick delivery.
- MGMaggie G.Verified BuyerReviewingSiemens B250 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/24/26Great Service
Came in great condition and in an incredibly timely manner. Will continue superbreakers for all of my orders in the future!
- DBDonnie B.Verified BuyerReviewingSiemens B115 - 15A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26New Breaker
Awesome breaker & Superbreakers is a awesome company!
- BLBrian L.Verified BuyerReviewingSiemens B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/4/26Brian
Works great
- JFJoseph F.Verified BuyerReviewingSiemens B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/23/26Great value
It was a great value