40.20 Apr 17, 2026
PRVC Jun 12, 2026
IEC
TC 94
International Standard
PROJECT
IEC 63522-55 ED1
40.20
DIS ballot initiated: 12 weeks
Apr 17, 2026
Electrical relays - Tests and measurements - Part 55: Maximum load breaking capacity
40.20 DIS ballot initiated: 12 weeks
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