Square D™ QO™ Miniature Circuit Breaker, Standard, 240 VAC, 50 A, 50/60 Hz Frequency, 22 kA Interrupt, Thermal/Magnetic Trip, 50 A Trip, 2 Pole, 1 ph, Toggle Actuator, Box Lug Connection, 4 to 2/0 AWG Wire, Bolt-On Mounting, 40 deg C, 5 in L x 3.47 in W x 5.09 in H Dimensions