The automatic recovery overvoltage and undervoltage protection device conforms to the modular design standard High-quality electronic components with reliable performance When the power condition is unstable, the protection function is automatically activated If the voltage is too high, it will automatically cut off When the power returns to normal, it will re-power within 1 minute Green light - normal power supply. Red light - overvoltage or undervoltage Specifications: AC voltage: 230V±10%, frequency 50Hz/60Hz Max current: 40A or 60A Max load power: 8.8KVA Overvoltage action cut-off value: >270VAC±5V Normal voltage value: 175-270VAC Cut-off value for undervoltage: <170VAC±5V Overvoltage and undervoltage cut-off: <1s Delay after power failure: <60s Self-consumption: <2W Motor life: = 100000 times Size: 35*70*77mm Mounting type: 35mm Din Rail Note: When connecting for the first time, wait 1 minute. The product can only work after the red light goes out.