SIEMENS
SIEMENS B250 Miniature Circuit Breaker BL Series 50A 2 Pole 120/240V AC
Protects 120/240V AC circuits with a 50 A, 2-pole bolt-on breaker rated for 10 kA interrupting capacity
- 50 A rating handles heavy residential circuits
- 10 kA interrupting capacity clears faults safely
- Bolt-on design fits Siemens P1 panelboards
- Two-pole construction serves 120/240 V AC systems
- 125 A frame size matches standard BL series dimensions
BL Series 50 A bolt-on breaker
This Siemens BL Series miniature circuit breaker provides 50 A over-current protection for single-phase 120/240 V AC branch circuits. It mounts by bolting directly onto compatible Siemens P1 panelboards and load centers. The two-pole design occupies two adjacent spaces in the panel. It is suited for residential and light-commercial electrical installations requiring standard thermal-magnetic trip characteristics.
Panel integration and wire range
The breaker uses a bolt-on mounting style that secures to the P1 series bus without a separate clip kit. Terminal lugs accept conductors down to 8 AWG, simplifying connections for typical branch-circuit wire sizes. A 10 kA interrupting rating at 120/240 V AC handles available fault current in most service-entrance applications. The 125 A frame size ensures compatibility with the panel’s bus rating.
Toggle actuator and shipping condition
A front-mounted toggle actuator gives clear on/off/trip indication for quick status checks during commissioning or troubleshooting. The unit ships new in manufacturer packaging, ready for immediate installation. No additional accessories or configuration software are included or required for basic operation.
Highlights
- 50 A rating handles heavy residential circuits
- 10 kA interrupting capacity clears faults safely
- Bolt-on design fits Siemens P1 panelboards
- Two-pole construction serves 120/240 V AC systems
- 125 A frame size matches standard BL series dimensions
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
Will the 50 A breaker trip if it runs at full load all day?
The breaker is rated for continuous operation at 50 A on a 125 A frame; sustained loads at this level are within its design limits.
How much heat or noise does the bolt-on toggle produce during constant use?
A miniature breaker of this type runs silently; warmth at the lugs is normal but stays within the 10 kA interrupting rating at 120/240 V AC.
Which panelboard must I already have for this BL-series breaker to fit?
It is built for Siemens P1 panelboards and requires a bolt-on mounting rail with lug terminals accepting a minimum of 8 AWG wire.
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