Features: High-current thermal trip circuit breaker with manual reset switch, suitable for auxiliary DC electrical systems, when the current reaches a predetermined value, the recoverable fuse automatically disconnects the protection circuit Circuit protection function: When the current reaches a predetermined value, the self-recovery fuse will automatically disconnect to protect the circuit. Prevent excessive current and protect electrical appliances. Overcurrent protection, overvoltage protection, residual current protection, overcharge protection. Simple installation: no need to replace the built-in fuse, it can also be used as a coin cell battery switch. This circuit breaker is easy to install and can be mounted on any panel, wall or car. Material and wiring: The shell and components are made of high flame-retardant and anti-vibration plastic, which has a long service life. It accepts 0/2/4/8 gauge power cords with adapters for direct connection to all 12, 24 volt systems Application: Provide overload or short-circuit current protection when high-current power supplies are used in automobiles, ships, ships, RVs, caravans, tractors, horns, horns, automotive dual battery isolators, winches, etc. Audio circuit breaker, trip circuit breaker for high current tropical manual reset switch, suitable for auxiliary DC electrical system. Colour:black Material:plastic type:300A Package Contents: 1 x Circuit Breaker Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.