Controls whether power can be drawn from battery to prevent inadvertent battery draining when boat is not in use Two-position switch (no lock) with positive click-stop on both positions: On/Off For use with 6-, 12-, 24-, and 36-volt systems; rated for 230 amps continuous, 345 amps momentary (5 minutes) Conforms to U.S. Coast Guard standards for ignition protection 5 ½-In. diameter x 2 5/8-In. high; cable lug size of 3/8-In. Manufacturer part number 50-11553