Perko Compact Medium Duty Main Battery Disconnect Switch One Size. Compact Battery Selector & Main Disconnect Switches Ignition Protected For use with 12 24 and 32 volt marine electrical systems Higher rating than popular 8500 series switches Same bolt patterns as popular 8500 series Smooth Positive Position Selector Compact Medium Duty Main Battery Disconnect Switch Specifications for Perko 9611DP Compact Medium Duty Main Battery Disconnect Switch: Manufacturer: Perko Color: Black Features of Perko 9611DP Compact Medium Duty Main Battery Disconnect Switch AFD: No Lockable: No Package Contents: Perko 9611DP Compact Medium Duty Main Battery Disconnect Switch Perko 9611DP: 9611DP Compact Medium Duty Main Battery Disconnect Switch One Size