1,The panel is simple, the function is clear, and it conforms to the ergonomic design. 2,To meet the application requirements in various scenes, and it can operate reliably in harsh environments. 3,Voltage current protector can automatically reset with no manual operation, easy to use and very convenient. 4,With accurate voltage test, the undervoltage protector does not exceed 1% of the overall range. 5,Protection device will not be damaged by the maximum overvoltage of the circuit failure. Item Type: Overvoltage Undervoltage Protector Model: VA-40A Material: ABS Technical Data Rated Power Voltage AC220V Operating Voltage Range AC 80V-400V(single phase) Rated Frequency 50/60Hz Current (> A) Setting Range 1-63A Overvoltage (> U) Setting Range 230-300V Undervoltage (<U) Setting Range 140-210V Error 2% >U and <U Trip Delay 0.5S Restart/Start Delay 1s-600s Voltage Measurement Accuracy Not more than 1% of the overall range Rated Insulation Voltage 400V Output Contact 1NO Electrical Life 10x10x10x10x10 Mechanical Life 10x10x10x10x10x10 Protection Level lP20 Pollution Degree 3 Altitude ≤2000m / 6561.7ft Operating Temperature -50℃-55℃ Temperature ≤50% at 40℃(no condensation) Storage Temperature -30℃-70℃ Default Setting Technical Parameters Setting Range Stepping Factory Setting Overvoltage Trip Value 230-300V 1V 280V Undervoltage Trip Value 140-210V 1V 160V Overcurrent Trip Value 1-63A 1A 20A Reset/Start Delay 1s-600s 1s 5s Current Specifications 15A 25A 32A 50A 63A Rated Working Current (A) 15 25 32 50 63 Maximum Working Current Lmax (A, Within 10min) 25 30 40 60 80 Maximum Load Power (KW) 3.6 5.5 7 11 13.9 1 x Overvoltage Undervoltage Protector 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.