The car battery power off switch helps to effectively protect the power supply and refuse leakage. It is suitable for yachts, marine boats, cars, trucks, RVs, etc. Features: Car battery power off switch, suitable for yacht, marine boat, car, truck, RV, etc. The screw is made of brass, which has fine electrical conductivity, and the surface is tin-plated, which is more resistant to oxidation and corrosion. The main body is made of sturdy nylon, high temperature resistant and anti-drop, and protects the battery and prevents leakage. The position of the switch is clearly indicated and the effect of Switching on and off can be achieved by turning the knob. On-off 2 positions; 275 amps continuous at 12.0 V, 455 amps intermittent at 12.0 V, 1250 amps momentary at 12.0 V. Features: Hardware : Brass + Nylon Screw diameter: 10 mm Rated current: 300?A (12?V) Instantaneous current?: 1000?A (12?V) Item size: 68*68*74mm/2.7*2.7*2.9in Item Weight?:?200?g/7.1?oz Package Size?: 72*72*100mm/2.8*2.8*3.9in Package weight:?266?g/?9.4 oz Packing list : 1 * power switch