
Electromechanical non-specified time all-or-nothing relays of assessed quality. Generic specification
出版:British Standards Institution

专家解读视频
© British Standards Institution 2013
IEC 61811-1 Ed. 1.0 - Identical
DIN EN 61811-1 (1999-11) - Identical
SS EN 61811-1 Ed. 1 (1999) - Identical
EN 61811-1:2015 - Identical
NBN EN 61811-1:2000 - Identical
NF EN 61811-1:1999 - Identical
I.S. EN 61811-1:1999 - Identical
UNE EN 61811-1:2000 - Identical