QC3090, 3 Pole, 90A, 240VAC, Thermal Magnetic molded case Q-frame, Ampere At 40 Deg C, Interrupting Rating 10000 Ampere, Box Lug Terminal, Wire Size 14 To 10 Awg Aluminum/Copper (Line), 14 To 4 Awg Aluminum/Copper (Load), Cable In, Cable Out Mounting, Approval Ul 489, Csa. This breaker is desinged and configured to accomodated panel builders and manufacturers of assorted equipment such as stage lighting, air conditioning or medical equipment.