1、Intelligent Control: This voltage protector has an intelligent chip that can set its own voltage according to the state of electricity use. When showing that the current voltage exceeds the set voltage, it will automatically break the circuit. 2、Protect The Circuit: Since this voltage protector will break the circuit in case of voltage overload or induced lightning strike, it serves to protect the circuit as well as the electrical appliances. 3、Wide Application: This voltage protector switches to standby power when the power goes out and to the main power when it comes in, so it is widely used in various places where continuous power outages are not allowed: factories, shopping malls, nurseries, etc. 4、Auto Reset: The switchgear of this voltage protector is automatically reset, so there is no need to worry about the circuit disruption due to the toggle state switching. 5、Flame Retardant Housing: The housing of this voltage protector is made of flame retardant PC plastic, so the protector itself will not be damaged in case of voltage overload or current overload, thus allowing it to work better. Item Type: 3 Phase Adjustable Voltage Protector Model: 3VA001 Rated Working Voltage: AC220V Operating Voltage Range: AC140V-500V ( 3 Phase ) Rated Frequency: 50Hz, 60Hz Overvoltage Protection Value: AC390V-AC500V Undervoltage Protection Value: AC140V-AC370V Voltage Cut Off Time: 1-400s Overcurrent Power Off Time: 1-30s Recovery Time ( Start Up Delay Time ): 1-400s Self Power Consumption: ≤1.5W Motor Mechanical Life: ≥100000 times Relative Humidity: 45-90% RH, 40℃ Altitude: ≤2000M Pollution Level: Grade 2 1 x 3 Phase Adjustable Voltage Protector 1 x Manual