Miniature Circuit Breaker, Amps 40 A, AC Voltage Rating 120V AC, Circuit Breaker Type Standard, Number of Poles 1, DC Voltage Rating Not Rated, Circuit Breaker Actuator Toggle, Circuit Breaker Mounting Style Plug In, Compatible Panelboard/Load Center Series X125-0816C, Phase Single, Series UBIF, Max. AIR Rating 10kA at 120V AC, For Use With Federal Pacific Load Centers, Terminal Connection Lug, Frame Size 60A/SWD, Length 3.36 in, Width 1 in, Depth 2.55 in, Min. Operating Temp. 0 Degrees F