DIN IEC 17B-861-CD (1998-03)被替代
Low-voltage Switchgear And Controlgear - Part 5: Control Circuit Devices And Switching Elements; Section 1: Electromechanical Control Circuit Devices; Amendment To Iec 60947-5-1, Chapter 4: Special Requirements For Mechanically Linked Contact Elements
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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