Current stage: 40.99 Effective date: Jul 4, 2025
Next stage: DECFDIS Next stage date: Jul 31, 2025
Originator: IEC
Owner: TC 121/SC 121B
Type: International Standard
ICS: 29.130.20
IN_DEVELOPMENT IEC 61439-8 ED1 40.99 Full report circulated: DIS approved for registration as FDIS Jul 4, 2025