Blue Sea Systems Heavy Duty Battery Switch Selector 4 Position 3002Blue Sea 3002 HD Series Heavy Duty Selector 4 Position Battery Switch HD Series Heavy Duty Selector 4 Position Battery Switch Switches isolated battery banks to all loads or combines battery banks to all loads Make-before-break contact design allows switching between battery banks without power interruption Meets American Boat and Yacht Council (ABYC) requirements for battery switches Ignition protected?safe for installation aboard gasoline powered boats Case design allows surface or rear panel mounting Accepts two 4/0 AWG (95mm?) battery cables Cranking rating: 10 sec. 2 750As Cranking rating: 1 min. 1 150A Intermittent rating: 5 min.700A Continuous amperage: 500A Maximum voltage rating: 32V DC Terminal stud size: 1/2 in. (M12) Terminal stud torque: 220 in.-lbs. (24.86 N?m) max. Mounting holes accept 1/4 in. (M6) screw Cable size to meet ratings 4/0 AWG (95mm?) Cable quantity to meet ratings two cables / terminal Cable clearance for 4/0 AWG cables 1.10 in. (27.9mm)