In the switch socket market, there are many kinds of clasp material for wall switch socket, but phosphor tin bronze is the safest part of switch socket! Some people say, well, why not iron? That is because the resistance of copper is much smaller than that of iron. Some people will put forward the use of copper plating on the surface of iron, but the thin area of copper plating is small and the resistance is large, and there is no great improvement. In the case of current, power is consumed on the resistor, and this energy is converted into heat. The greater the resistance of the wall switch socket parts is easy to get hot, may make the plastic parts of the deformation or even the risk of melting, will give us the use of safety hazards.
