Current stage: 20.99 Effective date: Sep 1, 2026
Originator: IEC
Owner: TC 23/SC 23H
Type: International Standard
ICS: 29.120.30
PUBLISHED IEC 60309-1:2021 ED5
IN_DEVELOPMENT IEC 60309-1/AMD1 ED5 20.99 WD approved for registration as CD Sep 1, 2026