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Siemens B2125H Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Siemens
B2125H
Molded Case Circuit Breaker
Brand
Siemens
SKU
B2125H
Quantity
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Siemens B2125H - 125A 2 Pole Molded Case Circuit Breaker
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Description
Delivering enhanced interrupting capacity, the Siemens B2125H is a 2-pole, 125A molded case circuit breaker from the BLH series. It is designed for commercial and industrial facilities requiring robust thermal-magnetic protection. This bolt-on breaker mounts into Siemens P1, P2, P3, P4, and P5 panelboards. The secure bolted connection provides excellent stability for critical branch circuits. With a 22kAIC rating at 120/240VAC, it safely clears higher fault currents. It is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B2125H |
| Series | BLH |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 240VAC, 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 2-1/0 AWG (Cu), 1/0-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 2 AWG (Cu), 1/0 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 |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
5 answersWhich panelboards are compatible with the Siemens B2125H circuit breaker?
The B2125H is a bolt-on molded case circuit breaker designed for installation in Siemens P1, P2, P3, P4, and P5 panelboards.
What is the difference between the Siemens B2125 and the B2125H?
The H in the B2125H catalog number indicates a higher interrupting rating. The B2125H is rated for 22kAIC at 120/240VAC, whereas the standard B2125 is rated for 10kAIC.
What wire sizes are accepted by the lugs on the B2125H?
The load side lugs on this 125A breaker accept 2 AWG to 1/0 AWG copper wire, or 1/0 AWG to 2/0 AWG aluminum wire.
Is the Siemens B2125H HACR rated?
Yes, Siemens BLH series breakers, including the B2125H, are HACR rated for use with heating, air conditioning, and refrigeration equipment.
Is the B2125H the same as a BLH type breaker?
Yes, the B2125H is the specific catalog number for a 2-pole, 125-amp circuit breaker within the Siemens BLH frame family.
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