300 Amp continuous rating for outboards and small gasoline or diesel engines. One-piece tin-plated copper stud design never loosens over time. Terminal studs accept 3/8″ or M10 ring terminals. Features isolation cover with 3 removable sides. Ignition protected and UL Listed. Rated for 300 amps continuous, 500 intermittent, 1500 cranking. 2-7/8″ x 2-7/8″3 Position Switch – Switches isolated battery banks to all loads4 Position Switch – Switches isolated battery banks to all loads or combines battery banks to all loads