Selector 4 Position. Switches isolated battery banks to all loads or combines battery banks to all loads. Includes AFD (Alternator Field Disconnect) Ignition protectedsafe for installation aboard gasoline powered boats IP66 waterproof, ISO 8846 and meets ABYC requirements Terminal Stud Size: 3/8" - 16 Continuous rating: 350A, Maximum voltage: 32V DC Dual Circuit. Simultaneously switches two isolated battery banks Ignition protectedsafe for installation aboard gasoline powered boats IP66 waterproof, ISO 8846 and meets ABYC requirements Terminal Stud Size: 3/8" - 16 Continuous rating: 350A per circuit, Maximum voltage: 32V DC Dual Circuit Plus. Simultaneously switches two isolated battery banks or combines battery banks to all loads Ignition protectedsafe for installation aboard gasoline powered boats IP66 waterproof, ISO 8846 and meets ABYC requirements Terminal Stud Size: 3/8" - 16 Continuous rating: 350A per circuit, Maximum voltage: 32V DC Single Circuit ON-OFF. Switches a single battery to a single load group Ignition protectedsafe for installation aboard gasoline powered boats IP66 waterproof, ISO 8846 and meets ABYC requirements Terminal Stud Size: 3/8" - 16 Continuous rating: 350A, Maximum voltage: 48V DC Single Circuit ON-OFF. Switches a single battery to a single load group. Includes AFD (Alternator Field Disconnect) Ignition protectedsafe for installation aboard gasoline powered boats IP66 waterproof, ISO 8846 and meets ABYC requirements Terminal Stud Size: 3/8" - 16 Continuous rating: 350A, Maximum voltage: 48V DC Selector 3 Position. Switches a single battery to a single load group. Includes AFD (Alternator Field Disconnect) Ignition protectedsafe for installation aboard gasoline powered boats IP66 waterproof, ISO 8846 and meets ABYC requirements Terminal Stud Size: 3/8" - 16 Continuous rating: 350A, Maximum voltage: 32V DC