
Electromechanical All-Or-Nothing Relays - Part 50: Sectional Specification - Electromechanical All-Or-Nothing Telecom Relays Of Assessed Quality
出版:Asociacion Espanola de Normalizacion

專家解讀視頻
2002 [01/08/2002]
EN 61811-50:2002 - Identical
EN 61811-50 : 2002 - Identical
IEC 61811-50 : 2.0 - Identical