Blue Sea Systems M Series Mini Battery Switch Blue Sea Systems Battery Switch switches a single battery to a single load group. Blue Seas versatile case design allows for multiple mounting options rear, front, or surface. This battery switch has a 300 Amps continuous rating for outboards and small gasoline or diesel engines. Features Single Circuit ON-OFF Ignition protected - safe for installation aboard gasoline powered boats Case design allows surface, front panel, or rear panel mounting Isola