IEC 60320 is a set of international standard

International standard

International standards are standards developed by international standards organizations. International standards are available for consideration and use, worldwide...

s specifying non-locking electrical power couplers for the connection of power supply cords to electrical appliance up to 250 V. Couplers described under these standards have standardised current and temperature ratings. Use of standard inlets and country-specific cord sets allows manufacturers to produce the same appliance for many markets, where only the cord set has to be changed for a particular market.