VCT ST-4000D Heavy Duty 4000 Watts 110V/220V/240V Dual Voltage Step Up /Step Down Voltage Transformer for Worldwide Use 4000 Watt Maximum Capacity, heavy-duty continuous use transformer Converts 110/120 V to 220/240 V OR converts 220/240 V to 110/120 V 2 grounded outlets in front of unit (accepts 3 or 2 prong US/ 2 prong Euro and Asian plugs) Insulated power cord is hard wired with a grounded European Shucko plug also good for Asian outlets Comes with 2 prong US adapter to enable non-grounded use in the USA, Canada and Mexico .FUSE PROTECTED