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Siemens B250H Molded Case Circuit Breaker
- 50A
- 2 Pole
- Bolt-On
Siemens
B250H
Molded Case Circuit Breaker
Brand
Siemens
SKU
B250H
Quantity
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Siemens B250H - 50A 2 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens B250H - 50A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B250H |
| Series | B |
| Amperage | 50A |
| Poles | 2 |
| 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 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, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Siemens B250H - 50A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B250H-R |
| Series | B |
| Amperage | 50A |
| Poles | 2 |
| 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 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, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Description
Engineered for commercial and industrial distribution, the Siemens B250H provides reliable thermal-magnetic protection. This 2-pole, 50A molded case circuit breaker is designed for 120/240VAC systems. The unit features a bolt-on mounting style with load side lugs for secure wire connections. It installs into Siemens P1 panelboards and serves as a functional cross-reference for BAB2050H and QOB250VH breakers. Delivering a 22kAIC rating, this HACR-rated breaker ensures robust performance.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B250H |
| Series | B |
| Amperage | 50A |
| Poles | 2 |
| 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 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, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhat panelboards are compatible with the Siemens B250H circuit breaker?
The B250H is designed for use in Siemens P1 panelboards and older S1 series panels. It requires a bolt-on connection and will not fit standard residential plug-in load centers.
Can the B250H be used to replace a legacy ITE circuit breaker?
Yes, the Siemens B250H is the direct replacement for older ITE B250H breakers. It shares the identical bolt-on mounting style and physical footprint.
What does the "H" in the B250H part number indicate?
The "H" designates this as a High Interrupting capacity breaker within the Siemens BL family, specifically classifying it as a Type BLH. This provides a 22kAIC rating, whereas standard B250 (Type BL) breakers only offer 10kAIC.
What safety standards does the B250H meet?
The B250H is a UL 489 listed molded case circuit breaker, ensuring it meets strict safety standards for branch circuit protection in commercial and industrial electrical distribution systems.
Are the trip settings on the B250H field adjustable?
No, this breaker utilizes a fixed thermal and fixed magnetic trip unit. The Long Time and Instantaneous trip functions cannot be adjusted after manufacturing.
Is the B250H suitable for HVAC equipment?
Yes, the B250H is HACR rated, meaning it is safety certified for use with heating, air conditioning, and refrigeration equipment.
How does the B250H connect to the panelboard?
This is a bolt-on circuit breaker. It secures directly to the panel bus using screws rather than snapping into place. Ensure the panel is fully de-energized before mounting and follow the torque specifications printed on the breaker.
Is the B250H approved for reverse feed applications?
Yes. Because the B250H has a non-removable trip unit, it is suitable for reverse feeding in accordance with UL 489 standards.
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