M12 A-coded 5-pin connector: For each connector size, the A-coding is the inspecific pinout variant and the only variant defined in varying numbers of pins.Ethernet cable with an M12 X-coded connector in one end and a modular connector in the other.
IEC metric screw sized connectors is a family of electrical connectors defined by IEC that are named according to their ISO metric screw thread, namely M5, M8 and M12.[1] The number gives their outer screw thread diameter in millimeters as with the identically named screws. However, the connectors are further classified by a so-called coding, denoted by one or more letters, which defines things like pin layout, shape of connecting surfaces and electrical properties.[2][3]
The many types are partly to prevent incorrect connection.[2] The larger connector sizes are the most varied, with designated connectors ranging from analog and digital signals to AC and DC power.[4]
Each "coding" has a different keyway that prevents incorrect connection between incompatibly keyed connectors.[5]
Major uses include factory automation and transportation.[2]
Products can be designed for high weather and chemical resistance (high IP rating)[2] as well as mechanical durability.[1]
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"M12 connector coding for automation and industry 4.0 compliance".
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