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 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, , 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 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.