PowerMark Gold indoor main lug value kit. Includes select circuit breaker value kit with (6) THQP120 single-pole 20A circuit breakers, (1) THQP230 double-pole 30A circuit breaker, and (1) THQP250 double-pole 50A circuit breaker. Features a sturdy tin-plated copper bus bar and a rust resistant galvanized box for increased durability and reliability. 1-piece interior removes and re-installs easily. Indoor NEMA 1 enclosure with combination surface/flush front. Single phase, 3 wire, 22K AIC rating. ANSI (American National Standards Institute) certified.