Miniature Circuit Breaker, Amps 20 A, AC Voltage Rating 120/240V AC, Circuit Breaker Type Tandem, Number of Poles 1, DC Voltage Rating 48V DC, Circuit Breaker Actuator Paddle, Circuit Breaker Mounting Style Plug In, Compatible Panelboard/Load Center Series QO, Phase Single, Series QO, Max. AIR Rating 10kA at 120/240V AC, For Use With Old Non Class CTL QO Load Center, Terminal Connection Lug, Frame Size 100A/QO, Length 3.22 in, Width 0.75 in, Depth 2.91 in, Min. Wire Size 12 AWG (Al), 14 AWG (Cu)