Five Oceans Single Circuit On-Off Battery Selector Switch, 250 Amp FO-3510 Single Circuit ON-OFF. Switches a single battery to a single load group Rated: 250 Amp Continuous duty at 12V, 350 Amp intermittent Silver plated brass stud bolts, Non-Corrosive grade metals Dimensions: 2-5/8" x 2-5/8" Positions: On/Off