Miniature Circuit Breaker, 40 A, 120V AC, 1 Pole, Bolt On Mounting Style, BQH Series Wire Size 4 AWG (Al), 6 AWG (Cu) AIR Rating 22kA at 120V AC, For Use With Siemens Panelboards, Terminal Connection Lug, Frame Size 125A/BQH, Length 4 in, Width 1 in, Depth 3 in, Min..