... combination ,save precious metals and increase productivity..2>Low and stable contact resistance,good processing and welding ... can be used in high or low-voltage electrical appliances.2>Switches,relays,circuit breakers,sensors,thermostat etc.Specifications1,Over ... Ag, Cu, etc ApplicationsLow Voltage Electrical Appliances and Households,such as Switch,Relay,KSD,Circuit Breaker,Contactor,train,protector, ...