Siemens B21500S01 U is a 2‑pole molded‑case circuit breaker rated for 120/240 V AC at 15 A, designed to protect branch circuits in distribution panels. This BL‑type device provides a 10 kA interrupting capacity (10 kAIC) and is configured as a 2‑pole unit for reliable overcurrent protection. It includes a factory‑installed 120 V shunt‑trip option, enabling remote disconnection for safety interlocks. Common applications include panel‑mounted overcurrent protection in electrical distribution systems where remote trip capability and robust short‑circuit protection are required.
