Overcurrent/shortcircuit-protection: When the current is more than 1.15 times the rated current and lasts for more than 2 seconds, or it is more than 3 times the rated current (equivalent to short circuit), the protector will be disconnected immediately. Leakage-protection: When 15-30mA leakage occurs in the line, the protector will be disconnected within 0.1 second, (leakage inactive current: 15mA, leakage active current: 30mA) Undervoltage/Loss of Voltage-Protection: When the powersupply voltage is lower than 160 V±5 V, the protector is disconnected, and after the voltage rises to normal (>170 V), the protector automatically switches on and energizes; When the powersupply network loses voltage and power, the protector disconnects the input and output, and the protector automatically switches on and turns on after the powersupply of the power network resumes normally for 2 seconds. 0vervoltage-protection: When the powersupply voltage is higher than 280 V t5 V, the protector is disconnected, and after the voltage drops back to normal (<270 V), the protector is automatically switched on and energized. Surge-protection: The protector has a certain surge-protection capability, ln=5KVImax=10kA at 8/20ps.