Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect

3003 HD-Series Battery Switch Selector with Alternator Field Disconnect Features: 500 Ampere Continuous Rating Accepts 4/0 battery cables Ignition protected - safe for installation aboard gasoline powered boats .870" (22.01mm) stud length to accept 4 or more cable terminals 1/2" (M12) Tin-plated copper studs for maximum conductivity and corrosion resistance Meets American Boat and Yacht Council (ABYC) requirements for battery switches Tactile textures indicate knob position by feel only Case design allows surface or rear panel mounting Fits all Perko and Guest low amperage battery switch hole patterns