Perko 8504DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect & Key Lock [8504DP] Reading Lights and the vent comes complete

and the vent comes complete with a mounting nut and lock washer for a secure and stable fit

and marine-grade applications

secure fit with no protruding hardware

Engineered for superior strength

offering flexibility to match various installation requirements

Perko 8504DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect & Key Lock [8504DP] Reading Lights and the vent comes completeMedium Duty Battery Selector Switches Diameter: 5 1 4" Depth: 2 5 8" Polycarbonate Body with Brass Terminals Ignition Protected For use with 6 to 32 Volt Marine Electrical Systems Capacity 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent Terminal Stud Size: 5 16" When used with Non Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running. Specifications: AFD: Yes