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The IEC is the International Electrotechnical Commission. Although the IEC includes Japan and the United States of America among its members, the IEC is essentially a European Community standards association. IEC standards are heavily influenced by VDE - the German electrical standards association.International Electrotechnical Commission 3 Rue De Varembe' CH-1211 Geneva 20 Switzerland
IEC standards are most commonly encountered by the automation engineer with motor starters and PLC's.