GB/T 16608.51-2012 Electromechanical all-or-nothing relays.Part 51:Blank detail specification.Electromechanical all-or-nothing telecom relays of assessed quality.Non-standardized types and construction was changed to GB/T 16608.1-2023 Basic electromechanical relays for telecommunications with qualification - Part 1: General specification and blank detail specification.
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