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 WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Positions: 4 AFD: Yes Continuous Amperage: 700a Box Dimensions: 3"H x 7"W x 9"L WT: 1.3 lbs UPC: 632085030032 Owner&';s Manual (pdf)