, High Quality Features: Fully Automatic Overvoltage and Undervoltage Protector suitable for single-phase AC voltage 230V, 50/60Hz, rated working current up to 63A. Designed for overvoltage, undervoltage, and overcurrent protection in residential distribution panels or for single-phase electrical equipment. Automatically cuts off power supply during overvoltage, undervoltage, or overcurrent conditions to protect connected devices; automatically restores power when voltage returns to normal. Specifications: Item Type: Over/Undervoltage Protector Material: Plastic Overvoltage Range: 230–300V (adjustable) Undervoltage Range: 145–210V (adjustable) Dimensions: Approx. 36 × 85 mm (1.42 × 3.35 in), 65 × 45 mm (2.56 × 1.77 in) Color: White Quantity: 1 Piece Note: No retail packaging included. 1 cm = 10 mm = 0.39 inch. Allow for a measurement tolerance of up to 1 cm due to manual measurement. Screen settings may cause slight color variation between the image and the actual product. Package Includes: 1 × Over/Undervoltage Protector (accessories shown in images are for demonstration only and not included).