Molded Case Circuit Breaker, Low Voltage, Type BQ, 120/240 VAC, 40 A, 50/60 Hz, 10 kA Interrupt, 125A/BQ, Thermal Magnetic Trip, 2 Pole, 1, Toggle Actuator, Lug, 6-8 AWG Copper, 4-8 AWG Aluminum Wire, Bolt-On Mount, 40 deg C, Thermoplastic, Black, 3.7 in H x 4-1/2 in W x 12.8 in D, Standards/Approvals: UL 489 Listed, Applications: For panelboards