This part of IEC 61076 describes M12 circular connectors typically used for industrial process
measurement and control. These connectors consist of fixed and free connectors either
rewireable or non-rewireable, with screw-locking. The connectors with glass to metal seal are
fixed connectors only which consist of fixed glass to metal sealed styles with rewireable male
contacts and are intermateable with corresponding free connectors according to this
International Standard. Male connectors have round contacts Ø 0,6 mm, Ø 0,76 mm, Ø 0,8
mm and Ø 1,0 mm.
The different codings prevent the mating of these coded male or female connectors to any
other interfaces and cross-mating between the different codings.