BQ1B050

The Siemens BQ1B050 is a ‑pole,  amp thermal‑magnetic molded‑case circuit breaker designed for overcurrent protection in low‑voltage AC electrical systems. It belongs to Siemens’ BQ series of general‑purpose molded‑case breakers, which are engineered for reliable protection of branch circuits in residential, commercial, and light industrial panelboards. The compact ‑pole design provides space‑efficient protection at  VAC, making it suitable for lighting, receptacle, and small‑load circuits where a dedicated  amp protective device is required.

Electrically, the BQ1B050 incorporates a thermal‑magnetic trip mechanism that combines heat‑sensitive overload protection with an instantaneous magnetic element for rapid response to short‑circuit conditions. It is rated at {aic rating} interrupting capacity, ensuring it can safely interrupt high‑fault currents under normal service conditions when installed in compliant panels. Equipped with functions, delivering dependable performance across typical residential or light commercial load profiles.

Mechanically, this breaker uses a bolt‑on mounting connection and includes load‑side lugs, providing a secure interface with panelboard bussing systems. Its molded case and manual toggle allow straightforward manual operation, ON/OFF control, and reset after a trip event. As part of Siemens’ established BQ family, the BQ1B050 fits panelboards specified for bolt‑on breakers and is a common choice for both new installations and maintenance replacements where compact, code‑compliant  amp protection is needed.

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