Square D™ QO™ M2 Miniature Circuit Breaker, Standard, 240 VAC, 225 A, 50/60 Hz, 22 kA Interrupt, Thermal/Magnetic Trip, 225 A Trip, 2 Pole, 1 ph, Box Lug, 4 AWG to 300 kcmil Wire, Bolt-On Mount, 40 deg C, 5.07 in L x 3.6 in W x 5.6 in H