Siemens SpeedFax™ Molded Case Circuit Breaker, 120/240 VAC, 50 A, 50/60 Hz, 10 kA Interrupt, BQ/125 A Frame, Thermal Magnetic Trip, 2 Pole, 1 Phase, Toggle Actuator, Bolt-On, 8 to 6 AWG/8 to 4 AWG Wire, Panel Mount, 40 deg C, 3 in L x 3 in W x 2 in H, Black