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Siemens B250HH Molded Case Circuit Breaker
- 50A
- 2 Pole
- Bolt-On
Siemens
B250HH
Molded Case Circuit Breaker
Brand
Siemens
SKU
B250HH
Quantity
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Siemens B250HH - 50A 2 Pole Molded Case Circuit Breaker
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Description
Built for environments requiring higher fault current handling, the Siemens B250HH is a 2-pole, 50A molded case circuit breaker. It operates on 120/240VAC commercial and industrial electrical systems. This HBL-frame device utilizes a bolt-on mounting configuration to ensure a stable connection under heavy loads. It is specifically engineered to mount into Siemens P1 panelboards.Specifications
| Brand | Siemens |
|---|---|
| Series | B |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1 Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| 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 Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
6 answersWhich panelboards are compatible with the Siemens B250HH circuit breaker?
The B250HH is a bolt-on branch breaker specifically engineered for installation in Siemens P1 panelboards. It can also be used in P2 and P3 panelboards when equipped with the appropriate mounting hardware.
How does the B250HH differ from the B250 and B250H models?
While all three are 50A, 2-pole Siemens B-frame breakers, they have different short-circuit interrupting ratings. The standard B250 is rated for 10kAIC, the B250H is rated for 22kAIC, and the B250HH offers the highest interrupting capacity at 65kAIC.
What frame type does the B250HH belong to?
The B250HH is part of the Siemens B-frame family. Specifically, it is an HBL type breaker, which designates the high-interrupting 65kAIC tier of the BL bolt-on series.
Is the Siemens B250HH suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires HACR-type circuit protection. It is also UL 489 Listed for standard branch circuit protection.
Does the B250HH mount onto a standard DIN rail?
No, the B250HH is a bolt-on circuit breaker designed to bolt directly to the busbar of a compatible Siemens panelboard. It is not designed for DIN rail or plug-on load center mounting.
Does the B250HH include ground fault or arc fault protection?
No, the B250HH is a standard thermal-magnetic breaker designed for overload and short-circuit protection. It does not feature built-in GFCI (Ground Fault Circuit Interrupter) or AFCI (Arc Fault Circuit Interrupter) capabilities.
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