Miniature Circuit Breaker, Amps 40 A, AC Voltage Rating 120/240V AC, Circuit Breaker Type Standard, Number of Poles 2, DC Voltage Rating Not Rated, Circuit Breaker Actuator Toggle, Circuit Breaker Mounting Style Plug In, Compatible Panelboard/Load Center Series Type A, AH, Phase Single, Series UBITBA, Max. AIR Rating 10kA at 120/240V AC, For Use With Challenger and Thomas and Betts Load Centers, Terminal Connection Lug, Frame Size 100A/A, 100A/AH, Length 3.63 in, Width 1 in, Depth 2.5 in