1.Application: This protector is suitable for users or loads with single phase AC voltage of 230V, 50, 60Hz, rated operating current of 63A and below, ideal for homes, offices, etc. 2.Energy Saving: The current protector's low power consumption and long mechanical life ensures efficient and reliable performance for years to come. 3.Main Feature: In case of over voltage, under voltage or over current conditions, the protector will immediately cut off the power supply to guard electrical equipment from damage. 4.Automatic Restoration Of Power Supply: Professional voltage current protector, when the voltage returns to normal, the protector can automatically restore power supply. 5.Stable And Durable: The voltage protection relay case is made of premium plastic material, which is hard, durable and not easy to be damaged. specification:Item Type: Current Protector Material: Plastic Product Size: Approx. 8.6 x 6.9 x 3.9cm / 3.4 x 2.7 x 1.5in Use: Can provide under voltage or over voltage protection, but also can measure and stabilize the output voltage PackageList:1 x Current Protector 1 xInstructionManual NoteManual measurement, please allow 0.04?0.08in error.