Siemens B2100H U 100A 240V 2P Circuit Breaker

Siemens B2100H BLH 2-pole molded-case circuit breaker delivers 100 A protection for 120/240 V circuits in bolt-on panelboard installations. As part of Siemens’ BL/BLH family, this two-pole device is designed for common-trip operation on a 240 V AC system and employs a thermal-magnetic trip to quickly interrupt on overloads or short circuits. Rated for a 22 kA interrupt capacity, it provides robust protection for branch circuits in electrical distribution applications and is UL 489 listed. The B2100H is a bolt-on (BLH) style breaker configured for 120/240 V AC operation, making it suitable as a main or feeder protective device in panelboards and distribution panels that require a 100 A, two-pole solution. Its compact molded-case design supports straightforward integration into compatible Siemens panelboards and enclosures, with two-pole construction ensuring simultaneous disconnection of both conductors for enhanced safety. Typical applications include safeguarding feeders and branch circuits in commercial electrical distributions and HVAC control circuits that rely on 120/240 V, where reliable overcurrent protection is essential. Ensure compatibility with your panelboard’s mounting provisions and labeling before installation.