Molded Case Circuit Breaker, 125 A Amps, AC Voltage Rating 240V AC, Max. AIR Rating 10kA at 240V AC, For Use With -, Series QB, High Amp Trip Setting 2,400 A, Low Amp Trip Setting 1,200 A, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating Not Rated, Terminal Connection Line/Load Lug, Trip Type Thermal Magnetic, Phase Three, Instantaneous Trip Fixed, Phase Connection ABC, Frame Size 250A/QB, Circuit Breaker Mounting Style Free Standing, Height 6.47 in, Width 4.5 in