Molded Case Circuit Breaker, 125 A Amps, AC Voltage Rating 480V AC, Max. AIR Rating 42kA at 480V AC, For Use With SB Switchboards, Sentron Panelboards, Series HED4, High Amp Trip Setting 125 A, Low Amp Trip Setting 125 A, Circuit Breaker Type Standard, Number of Poles 2, DC Voltage Rating 250V DC, Terminal Connection Load Side Lug, Trip Type Thermal Magnetic, Phase Single, Instantaneous Trip Fixed, Phase Connection ABC, Frame Size 125A/ED, Circuit Breaker Mounting Style Lug In Panelboard