Features: 1.Automatic circuit breaker is equipped with push button disconnect and unique push button reset, can also be used as a kill switch. 2.The automatic circuit breaker comes with built?in high current terminal and the high temperature enclosure with a cover. 3.Prevents excessive current and overload protection for amps, audio electronics, audio/video systems, accessories, and DC sound amplifier system from damage. 4.Suitable for marine vehicles, moped power surges, car, boat, trucks, buses, RV's, ATV winches and so on. 5.The installation is particularly easy, simply mount on panel or firewall, convenient to operate with manual reset arm, effectively save your time. 6.When the current reaches the disconnect value, the circuit breaker will automatically cut off the power supply, more advantageous to use. Specification: Item Type: Automatic Circuit Breaker Material: ABS + Metal Size: Approx. 102x40x64mm/4.0x1.6x2.5in (L x H x W) Application: For RV, yacht, boat, car and so on. Electric Current: 200A Accept 1/0GA or 4GA Terminal-Free How to Use: 1. Circuit break protection: When the current reaches the cut-off value, the long handle rebounds and automatically cuts off the power supply. Generally, it travels in short circuit conditions. After removing the fault, press the long handle back to the original position to form a path. 2. Manual shutdown: we need to disconnect the circuit when climbing and directly press the red oval lock button. At this time, the long handle appears automatically to cut off the power. Connect it as above, then press the long handle back to its original position.