BQ2B065

The Siemens BQ2B065 is a 2‑pole, 65  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 2‑pole design provides space‑efficient protection at 240 VAC, making it suitable for lighting, receptacle, and small‑load circuits where a dedicated 65 amp protective device is required.

Electrically, the BQ2B065 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 10kA@240V interrupting capacity, ensuring it can safely interrupt high‑fault currents under normal service conditions when installed in compliant panels. Equipped with LI - Long-Time and Instantaneous 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 BQ2B065 fits panelboards specified for bolt‑on breakers and is a common choice for both new installations and maintenance replacements where compact, code‑compliant 65 amp protection is needed.

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