Inline Resettable Circuit Breakers with manual reset button are for use with higher amperage accessories. These breakers are ignition protected and can be installed aboard gasoline powered boats. May be used on 12V or 24V systems. Injection molded nylon and polycarbonate construction with stamped brass #10-32 studs with nuts. The copper post is the battery or "power in" post and the silver post is the auxiliary or "power out" protected post. Includes splash proof Breaker Cover (420840). Complies with SAE standard J553 and SAE J1171.