1、High amp thermal trip circuit breakers with a manual reset switch suitable for use on auxiliary DC electrical systems. 2、The recoverable fuse automatically disconnect and protection circuit when the current reaches a predetermined value. 3、Prevent excessive currents and protect electrical appliances.Over current protection, over voltage protection, current residual protection, overcharge protection. 4、Compared with ordinary fuses, its sensitivity is very high, it can protect circuit and electrical appliances in time; it can be manually restored and used continuously after disconnection and troubleshooting; it can control high current circuits. 5、Widely used for automobile with speaker, car double battery isolator, winch and other high current when using electricity, to provide protection in case of overload or short circuit current. Features: High amp thermal trip circuit breakers with a manual reset switch suitable for use on auxiliary DC electrical systems. The recoverable fuse automatically disconnect and protection circuit when the current reaches a predetermined value. Prevent excessive currents and protect electrical appliances.Over current protection, over voltage protection, current residual protection, overcharge protection. Compared with ordinary fuses, its sensitivity is very high, it can protect circuit and electrical appliances in time; it can be manually restored and used continuously after disconnection and troubleshooting; it can control high current circuits. Widely used for automobile with speaker, car double battery isolator, winch and other high current when using electricity, to provide protection in case of overload or short circuit current. Easy to install, can be mounted on any flat panel or on a wall or in the car. Specification: Condition: 100% Brand New Material: Plastic + Metal Color: Black shell + Gray cover Current Rating: 100A, 300A Quantity: 2pcs Package List: 2 * Circuit Breaker