Feature 1 Power supply voltage/current measurement protection (true RMS voltage measurement), voltage/current value digital display. 2 Can set over/under voltage value, over current value, dual bus bar design, strengthen the connection ability. 3 This protector can realize self-starting and self-reset time can be set at the same time. 4 Comes with great workmanship, perfect replacement for the old one and with stable performance. 5 This self-resetting digital display voltage/current protector is made of durable material, sturdy and stable.Item Type: Digital Display Voltage Current ProtectorRated Power Supply Voltage: AC220VRated Power Frequency: 45~65HzRated Current: 63AVoltage Display: YesCurrent Display: NoneOvervoltage Action Value Setting Range: 230V~ 300V (factory default 275V)Setting Range Of Undervoltage Action Value: 145V~ 210V (factory default 175V)Over/under Voltage Action Delay Time: 0.5sOvercurrent Action Value Setting Range: NoneOvercurrent Action Delay Time: NoneHysteresis Rate: 5% (set value of voltage\current)Power-on Delay Time: 2sReset Delay Time: 2~900s (factory default 30s)Measurement Error: 2%Delay Error: 10%IP Rating: IP20Pollution Degree: 3Electrical Life: 100000Mechanical Life: 1000000Altitude: 2000mWorking Environment Temperature: -20~ 55Allowable Relative Humidity: 50% (40) (no condensation)Rail Standard: Width Approx. 35mm / 1.4in (IEC/EN60715) Package List1 x Digital Display Voltage Current Protector1 x User Manual