Item Type: Voltage Protective Device_x000D_ Material: Flame Retardant PC_x000D_ Current: 1-40A_x000D_ Overvoltage Protection Value Range(uvo): 240V-300V_x000D_ Undervoltage Protection Value Range(uve): 140V-210V_x000D_ Shutdown Delay Time: 2s (can be set 1-300s)_x000D_ Self Recovery Protection Delay Time: 30s (can be set 1-300s)_x000D_ Rated Frequency: 50 or 60Hz_x000D_ Error: 2%_x000D_ Voltage Measurement Accuracy: 1%_x000D_ Rated Insulation Voltage: 400V_x000D_ Output Contact: 1No_x000D_ Electrical Life: 100000 times_x000D_ Mechanical Life 1000000 times_x000D_ Protection Grade: IP20_x000D_ Altitude: 2000m_x000D_ Working Temperature: -50-55_x000D_ Humidity: 50% at 40 (non condensing)_x000D_ Humidity Temperature: -30-70