GE Molded Case Circuit Breaker, Type THHQB, Series: Q-Line, 120/240 VAC, 20 A, 22 kA Interrupt, Internal Common/Non-Interchangeable/Thermal Magnetic/Long Instantaneous Trip, 3 Poles, 3-Phase, 14 to 8/12 to 8 AWG Wire, Bolt-On Mount, 3-9/32 in H x 3 in W x 2-3/8 in D