Features: Car battery power-off switch, suitable for yacht, marine boat, car, truck, RVs, 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, which is high temperature resistant and anti-fall, and protects the battery and prevents leakage. The switch position is clearly indicated, and the effect of turn-on and turn-off can be achieved by turning the knob. On-Off 2 positions; 275 Amps continuous at 12 V, 455 Amps intermittent at 12 V, 1250 Amps momentary at 12 V.