Molded Case Circuit Breaker, 300 A Amps, AC Voltage Rating 600V AC, Max. AIR Rating 25kA at 600V AC, For Use With Equipment Gear, Series MJ, High Amp Trip Setting 3,000 A, Low Amp Trip Setting 600 A, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating Not Rated, Terminal Connection Box Lug, Trip Type Electronic, Phase Three, Instantaneous Trip Adjustable, Phase Connection CBA, Frame Size 800A/M, Circuit Breaker Mounting Style Lug In/Lug Out, Height 12.9 in, Width 8.3 in