SIEMENS
SIEMENS B250H BL Series 50A 2 Pole 120/240V AC Circuit Breaker
Two-pole 50 A breaker rated 120/240 V AC with a 22 kA interrupting capacity for Siemens P1 panelboards
- Reliable overload protection backed by a 22kA interrupting rating
- Handles 50A loads on 120/240V AC single-phase circuits
- Fits Siemens P1 panelboards with bolt-on mounting
- Standard toggle actuator for clear on/off indication
- Accepts wire down to 8 AWG via lug terminals
Siemens BL Series 50 A Bolt-On Breaker
This Siemens BL Series miniature circuit breaker provides 50 A, 2-pole protection for 120/240 V AC single-phase panels. It mounts by bolt-on connection and carries a 22 kA interrupting rating at 120/240 V AC. The toggle actuator gives clear on/off indication for residential and light-commercial load centres.
Installers wiring Siemens P1 load centres
Electricians fitting Siemens P1 panelboards will find this breaker a direct fit for the BL bus. The 8 AWG minimum wire size suits typical branch circuits up to 50 A. Buyers needing a plug-on variant, a DC-rated device, or a frame larger than 125 A should select a different series.
22 kA interrupting rating at 120/240 V AC
The 22 kA AIR rating is the single figure that determines whether this breaker meets the available fault current at the panel. If the system calculation demands a higher interrupting capacity, this model cannot be used and a higher-rated frame must be specified.
Highlights
- Reliable overload protection backed by a 22kA interrupting rating
- Handles 50A loads on 120/240V AC single-phase circuits
- Fits Siemens P1 panelboards with bolt-on mounting
- Standard toggle actuator for clear on/off indication
- Accepts wire down to 8 AWG via lug terminals
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
How is the bolt-on breaker secured in a Siemens P1 panel, and which step is often missed?
The breaker bolts directly to the P1 panel bus using the supplied lug terminals; the step often missed is torquing the lugs to the panel manufacturer's specification to ensure a solid connection.
What maintenance will the toggle actuator and lug terminals need over time?
Periodically exercise the toggle actuator to prevent mechanical binding and inspect the lug terminals for signs of overheating or corrosion; re-torque if the panel schedule calls for it.
At what fault-current level does the 22 kA interrupting rating become the limiting factor?
The breaker is rated to safely interrupt up to 22 kA at 120/240 V AC; available fault current above that level exceeds its interrupting capacity and requires a higher-rated device.
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