This part of IEC 61076 describes M12 screw-locking circular connectors with 2-way up to 17-way, for data transmission with frequencies up to 100 MHz and signal and power transmission at up to 250 V rated voltage and up to 4 A rated current per contact.

These connectors consist of fixed and free connectors, either rewirable or non-rewirable.

Male connectors have round contacts, Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm or Ø 1,0 mm according to number of ways and coding, all contacts with the same size.

The different codings prevent the mating of differently coded male and female connectors.

NOTE 1 M12 is the dimension of the thread of the screw-locking mechanism of these circular connectors.

NOTE 2 These connectors are typically used for connecting industrial automation devices for process measurement and control.

NOTE 3 Several other IEC standards are available covering additional styles of circular connectors with M12 × 1 screw-locking, see Bibliography.

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