Heavy-Duty 4000 Watt Maximum Capacity Voltage Transformer with Dual Step Up/Down functionality. Switch transforms from 110V and outputs 220V for use in the USA, or switch from 240V and outputs 120V for use with USA tools overseas. Simran THG4000UD 4000 watt max load capacity, converts 110 to 220 volt or 220 to 110 volt, for continuous use, 1 Outlet, Safety Fuse Protection, 4000 watts capacity, Grounded Transformer for Two Way Voltage Conversion - 110 volt to 220 volt and 220 volts to 110 volt. Built-in fuse protection system. Can be used continuously considering its 80% capacity. (Please check your appliance wattage when choosing a right voltage converter). Operates on 110/120 60hz or 220/240 volt 50hz single phase and converts to and from 110/120/220/230/240 volt). Input voltage selector switch (120 or 220 volt). Ideal for both electric and electronic products like Computers, Consumer Electronics, Appliances and Testing Equipments. Outlet accept either 2 or 3 prong US or 2 prong Asian/European plug. Built-in power cord with 2 prong Euro/Asian Grounded plug on it. Can be also used with power strip to plug multiple appliances (total wattage from all plugged appliances must be below the converter's wattage capacity). Dimensions: L - 10.5" x W - 6.10" x H - 6" approx. Weight: 48 lbs approx. Model: Simran THG4000 Two-Way, THG4000UD includes: 4000W watt voltage converter transformer, Free 2-spare fuses.