1. Good Protection: Can offer overload protection, short circuit protection, over voltage protection, under voltage protection, leakage alarm, etc. 2. Test to Display: Supports digital display, the over under voltage protector can show the working voltage, real time current value, etc. 3. Wide in Utility: Allows for flexible utilization in home, market, hotel, office, power transmission, industrial equipment, mechanism and so on. 4. Adopting the PC: The cg is mainly made of flame retardant PC material, which is not likely to break and very durable for long term using. 5. Easy to Install: Comes with a compact size and a light weight as well, the the voltage protective device is very convenient to wire and install. Spec: Item Type: Over Under Voltage Protector Material: PC Current Setting Range: 1A~63A Over and Under Voltage Value: Over voltage adjustable = 500V. Under voltage adjustable = 140V. Delay Time: 1-300s How to Use: 1. Connect the input and output terminals correctly according to the product marking. The load current should be less than the protection current value of the product. 2. The neutral wire N must not be connected incorrectly and must be reliably connected, otherwise the protector cannot function properly. 3. Before connecting to the power supply, please carefully check whether the wiring is correct, whether the load size matches the current protection value of the product, and whether the wiring screws are tightened, otherwise the product will be damaged. 4. After the product is powered on, do not touch live parts to avoid electric shock. 5. This product needs to work in conjunction with micro interrupts for short circuit protection, otherwise if there may be short circuit at the input or load end of the product, it will not be able to provide load limiting protection. 6. Due to the automatic reset function of the product, after the action and protection of the product, the See moreTime : The digital display allows you to monitor the working voltage and time value. for test To Display: Supports digital display, the over under voltage protector can show the working voltage, etc. Easy To Install: The voltage protector small size, light weight, wiring and installation are very convenient. Ammeter: Three phase four wire voltmeter, easy and fast to use, saving and environmentally friendly. Wide Utility: for ideal for home, market, hotel, office, transmission, and industrial equipment.