Miniature Circuit Breaker, Amps 50 A, AC Voltage Rating 240V AC, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating Not Rated, Circuit Breaker Actuator Toggle, Circuit Breaker Mounting Style Bolt On, Compatible Panelboard/Load Center Series P1, Phase Three, Series BL, Max. AIR Rating 65kA at 240V AC, For Use With P1 Panelboards, Terminal Connection Lug, Frame Size 125A/HBL, Length 3.7 in, Width 4.5 in, Depth 12.8 in, Min. Wire Size 8 AWG, Max. Wire Size 4 AWG (Al), 6 AWG (Cu)