Item Type: Surge Protection Device_x000D_ Rated Power Supply Voltage: AC220V_x000D_ Rated Power Frequency: 45~65Hz_x000D_ Rated Current: 63A_x000D_ Voltage Display: Yes_x000D_ Current Display: No_x000D_ Overvoltage Action Value Setting Range: 230V~ 300V (factory default 275V)_x000D_ Setting Range of Undervoltage Action Value: 145V~ 210V (factory default 175V)_x000D_ Over/under Voltage Action Delay Time: 0.5s_x000D_ Overcurrent Action Value Setting Range: No_x000D_ Overcurrent Action Delay Time: No_x000D_ Hysteresis Rate: 5% (set value of voltagecurrent)_x000D_ Power-On Delay Time: 2s_x000D_ Reset Delay Time: 2~900s (factory default 30s)_x000D_ Measurement Error: 2%_x000D_ Delay Error: 10%_x000D_ IP Rating: IP20_x000D_ Pollution Degree: 3_x000D_ Electrical Life: 100000_x000D_ Mechanical Life: 1000000_x000D_ Altitude: 2000m_x000D_ Working Environment Temperature: -20~ 55_x000D_ Allowable Relative Humidity: 50% (40) (no condensation)_x000D_ Rail Standard: Width: Approx. 35mm / 1.4in (IEC/EN60715)