Isolated American Step Down Transformer – Isolation American Step Down transformers are essential for safely running your American 110/120 Volts rated appliance in Australia on the Australian 240 Volts power mains supply with additional protection and filtering features. Our Tortech Isolated transformers include additional features detailed below which are not offered by our Economy model transformer (see here for Economy version). This model is fully isolated (insulated input to output) through a double wound design and is the only model that provides additional protection for your appliance against voltage spikes in the power supply, as well as helping filter the audio quality for amplifier type equipment. Note: This model does not include an Earth Screen. If you want to have an Earth Screen included, Tortech can manufacture a custom unit by specifying your design requirements here. Read more about the important safety differences of Isolated transformers here. This unit uses a toroidal transformer to convert the 240 Volts Australian mains supply down to 110/120 Volts American rating, thus allowing your USA device to run in Australia. Simply plug your transformer into the Aussie power wall socket, and then connect your American device into the USA power outlet on the unit. Once they are both connected, switch the power on at the wall socket and at the step down unit, and you’re ready to go! Most Japanese equipment runs at 100v and by using Japanese appliance on a 110/120v you will encounter overvoltage. This overvoltage can deteriorate your appliance until it will stop functioning correctly. Additional FAQs about the frequency difference & more technical information, please read here. Still unsure which Step Down you will need? Designed for use with American Appliances under 50 watts