The function of the leakage protection device: To address the issue of leakage, such as when a person gets an electric shock, the current flows through the body and into the ground. If the current exceeds 30 milliamps, the leakage protection device will cut off the power supply, thereby preventing the current from causing harm to the human body.
2. Function of the air switch: When the current passing through the switch exceeds a certain limit, the switch will heat up and cause the metal plate to bend due to the heat, resulting in the switch tripping and cutting off the power supply. This is to protect the circuit from being burned out due to excessive current, and it only serves to protect the circuit.
3. Surge Protector: Primarily used for lightning protection and overvoltage prevention.
4. Overvoltage and Undervoltage Protector: Its main function is to comprehensively monitor, control and protect the voltage.
