Miniature Circuit Breaker, Amps 40 A, AC Voltage Rating 120/208V AC, Circuit Breaker Type Ground Fault Circuit Interrupter, Number of Poles 3, DC Voltage Rating Not Rated, Circuit Breaker Actuator Paddle, Circuit Breaker Mounting Style Bolt On, Compatible Panelboard/Load Center Series NQ, QO, Phase Three, Series QOB, Max. AIR Rating 10kA at 208/120V AC, For Use With QO Load Centers and NQ Panelboards, Terminal Connection Lug, Frame Size 100A/QO, Length 4.12 in, Width 2.25 in, Depth 2.91 in