Current stage: 30.99 Effective date: Jun 8, 2026
Next stage: TCDV Next stage date: Jun 1, 2028
Originator: IEC
Owner: TC 23/SC 23H
Type: International Standard
ICS: 29.120.30
PUBLISHED IEC 60309-4:2021 ED2
IN_DEVELOPMENT IEC 60309-4/AMD1 ED2 30.99 CD approved for registration as DIS Jun 8, 2026