Heavy Duty On & Off Battery Switch – 600A. The heavy-duty 422768 selector switch has 350A continuous and 1500 cranking amps to start a dual diesel engine. The battery selector switch isolates and/or combines two battery banks 422768. Installs with four #10 RH fasteners not included. Features: Can be surface or rear panel mounted . Ignition protected . Safe for installation on gasoline-powered boats . Constructed of injection molded nylon with machined brass contacts. CE certifiedstyle=inbackground-color: initial;in