Five Oceans On-Off Battery Isolator Switch, 275amp, max 1250amp FO-3619 Rated at 1250 Amps Intermittent, 275 Amps continuous at 12V Disconnects the battery safely, to eliminate any power draw from the battery when vehicle or boat are not in use UV stabilized bakelite vapor-proof housing - Built to last in marine conditions 4 mounting screw holes (mounting screws not included) Type: Flush Mount