Features ABS, Copper Material: Made of ABS shell and copper plated female studs, totally enclosed design defends wiring from dust, corrosion and rain. A suitable and reasonable choice for harsh sea conditions. Main Application: This battery disconnect switch is used in DC 12‑48V systems for isolating and securing electrical systems. And provides a reliable way to shut down power during maintenance and prevent over discharging of batteries. Widely Used: On Off 2 positions for various 12 V/24 V/48 V systems, suitable to satisfied different devices and meet your different uses. High Accuracy: The heavy duty battery cut off kill switch is designed with 275A DC continuous (1 hour), 350A DC intermittent (5 minutes), 1250A DC start (10 seconds), with stable performance and higher working efficiency. Easy Operation and Installation: There are 4 screws for you to install the switch on the equiment, then, twist the knob can you realize the on and off. Specification: Item Type: Battery Protection SwitchMaterial: ABS, Copper Continuous Current: 275Amps DC Intermittent Current: 350Amps DC Starting Current: 1250Amps DC Maximum Voltage: 60V DC Dielectric Strength: 1500VAC/1min Electrical Life: 10000 Times Screw Diameter: Approx. 10mm/0.4in Action: On Off Mounting: Back, Surface Scope of Application: Car Power Main Switch, Yacht RV Modification Accessories Package List:1 x Battery Protection Switch 4 x Bolt4 x Nut Note:Please allow 1‑2in error due to manual measurement. Thanks for your understanding. Package List 1 x Battery Protection Switch 4 x Bolt 4 x Nut