Challenger A250-2P-50A-120/240V Circuit Breaker

The Challenger A250-2P-50A-120/240V circuit breaker is a 50‑amp, two‑pole miniature breaker designed for Challenger Type A load centers, delivering 120/240V AC service with a 10 kAIC interrupt rating. This 1-inch‑wide, plug‑on device is a two‑pole unit that interrupts both hot legs simultaneously to protect high‑current branch circuits in residential panels. Commonly cataloged as UBITBA250, it serves as a direct replacement for Challenger Type A 50A breakers and is compatible with Challenger Type A panels and related Type A installations in related brand families (such as Thomas & Betts/Murray load centers). Designed for standard residential distribution equipment, it provides protection for circuits up to 50 amperes on a 120/240V feeder network, enabling safe disconnection of both live conductors in the event of an overload or short circuit. The Type A form factor and 1-inch width help determine panel acceptance and space planning in service panels that require Challenger’s legacy 2P 50A protection.