
Electromechanical All-Or-Nothing Relays - Part 51: Blank Detail Specification - Electromechanical All-Or-Nothing Telecom Relays Of Assessed Quality - Non-Standardized Types And Construction
出版:Danish Standards

專家解讀視頻
Pertains to electromechanical all-or-nothing telecom relays of assessed quality. Relays according to this standard are provided for operation in telecommunication applications.
EN 61811-51:2002 - Identical