Miniature Circuit Breaker, Amps 20 A, AC Voltage Rating 120/240V AC, Circuit Breaker Type High Interrupting Capacity, Number of Poles 3, DC Voltage Rating 48V DC, Circuit Breaker Actuator Toggle, Circuit Breaker Mounting Style Plug In, Compatible Panelboard/Load Center Series QO, Phase Three, Series QO, Max. AIR Rating 22kA at 120/240V AC, For Use With QO Load Centers and NQ Panelboards, Terminal Connection Pressure Plate, Frame Size 100A/QO, Length 3 in, Width 2.25 in, Depth 2.91 in