what voltage is used in switzerland
Travel Adapter for Switzerland Please be aware that whilst a travel adapter will allow you to physically fit a US plug into a different receptacle it will not change the voltage or frequency of the supply. Voltage - The mains voltage in Switzerland is 230 V which is incompatible with most US appliances (US voltage is currently specified as 120 V + /- 5%). Check any appliances that you wish to use carefully to see what voltage is specified.