Molded Case Circuit Breaker, 20 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 20 A, Low Amp Trip Setting 20 A, Circuit Breaker Type High Interrupting Capacity, 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 Any, Frame Size 125A/ED