HD-Series Battery Switch Selector with Alternator Field DisconnectPN:  3003500 Amperes Continuous Rating for large diesel engines500 Ampere Continuous RatingAccepts 4/0 battery cablesIgnition protected - safe for installation aboard gasoline powered boats.870" (22.01mm) stud length to accept 4 or more cable terminals1/2" (M12) Tin-plated copper studs for maximum conductivity and corrosion resistanceMeets American Boat and Yacht Council (ABYC) requirements for battery switchesTactile textures indicate knob position by feel onlyCase design allows surface or rear panel mountingFits all Perko and Guest low amperage battery switch hole patternsSwitch Ratings: 10 Sec: 2750A60 Sec: 1150A5 Min: 700AContinuous: 500AMax Voltage: 32V DCWARNING: 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.