
出版:Belgian Standards

專(zhuān)家解讀視頻
Applicable to specific time relays, eg time delay relays according to definitions in IEC 50(446) for industrial applications, such as control, automation, signal and industrial equipment).
SN EN 61812-1:1996 - Identical
SS EN 61812-1:1997 - Identical
UNE EN 61812-1:1998 - Identical
BS EN 61812-1:1997 - Identical
DIN EN 61812-1 (1999-08) - Identical
NF EN 61812-1:1997 - Identical
I.S. EN 61812-1:1999 - Identical