Square D™ MGL36800E10, Circuit Breaker, PowerPact M Series, 600 VAC, 300-800 A, 50/60 Hz Frequency, 35 to 60 kA Interrupt, Magnetic Trip, Magnetic Magnetic, Magnetic Magnetic, 3 Pole, Operating Handle Actuator, Lug Load/Lug Line Connection, 3/0 to 500 kcmil Wire, Unit Mounting, -13 to 158 deg F, 12.86 in H x 8.27 in W x 8.05 in D Dimensions, Black