Molded Case Circuit Breaker, 40 A Amps, AC Voltage Rating 525V AC, Max. AIR Rating 25kA at 277/408V AC, For Use With Electrical Distribution Equipment, Industrial Control Panels, Series BDL, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating Not Rated, Terminal Connection Everlink Lug Both Ends, Trip Type Thermal Magnetic, Phase Three, Instantaneous Trip Fixed, Phase Connection ABC, Frame Size 125A/BD, Circuit Breaker Mounting Style Unit Mount, Height 5.39 in, Width 3.19 in