Perko 8503DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect w/o Key Lock [8503DP] Marine Navigation & Instruments | Instruments Can be used with on-board

Can be used with on-board treatment systems (such as the Lectra/San®) and/or holding tanks

Compatible Devices:

This mount attaches to any flat surface and is easily adjusted for optimal viewing

While many of the parts are similar to today’s Crown Head there are some that are no longer available

Models have massive backplates and adjustable mounting channels with thru-bolted actuators for the ultimate in strength and reliability

Perko 8503DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect w/o Key Lock [8503DP] Marine Navigation & Instruments | Instruments Can be used with on-boardMedium 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 runnin Specifications: AFD: Yes