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Siemens B120H Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Siemens
B120H
Miniature Circuit Breaker
Brand
Siemens
SKU
B120H
Quantity
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Siemens B120H - 20A 1 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Siemens B120H - 20A 1 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B120H |
| Series | B |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Quantity
Siemens B120H - 20A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B120H-R |
| Series | B |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
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Description
Part of the B frame family, this 20A miniature circuit breaker provides robust thermal-magnetic protection for commercial and industrial electrical systems. It bolts firmly into Siemens P1, P2, and P3 panelboards, ensuring a secure connection for demanding environments. Featuring a 22kAIC interrupt rating at 120/240V, this unit is both HACR and SWD rated for versatile switching duty applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B120H |
| Series | B |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Product FAQs
4 answersWhat is the difference between the Siemens B120 and the B120H circuit breakers?
The primary difference is the interrupting capacity. The B120H is a high-interrupting model rated at 22kAIC, while the standard B120 is rated at 10kAIC. Both breakers share the same physical footprint and bolt-on mounting mechanism.
Can this breaker be installed in standard residential load centers?
No. The B120H is a bolt-on commercial breaker designed specifically for Siemens P1, P2, and P3 panelboards. Standard residential load centers typically require plug-on style circuit breakers.
Will the Siemens B120H directly replace older ITE or Gould models?
Yes. Because Siemens acquired the ITE and Gould product lines, the modern Siemens B120H serves as a direct, interchangeable replacement for legacy ITE and Gould B120H bolt-on circuit breakers.
What specialized applications is the B120H rated to handle?
This breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment. It also carries an SWD (Switching Duty) rating, which allows it to be used as a regular switch for 120V fluorescent lighting circuits.
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