IEC metric screw sized connectors

Series of electrical connectors From Wikipedia, the free encyclopedia

IEC metric screw sized connectors

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]

Thumb
M12 A-coded 5-pin connector: For each connector size, the A-coding is the inspecific pinout variant and the only[inconsistent] variant defined in varying numbers of pins.
Thumb
Ethernet cable with an M12 X-coded connector in one end and a modular connector in the other.

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]

The connectors on the ends of cables have a freely rotating screw threads that are turned to screw the plug into its mating socket, while the connectors attached to equipment have fixed screw threads that do not rotate. This means two panel-mount connectors will not fit together as they cannot be screwed in, however two cables are able to be joined together. The gender does not affect this arrangement - both male and female panel-mount connectors are fixed, and both male and female cable ends have freely rotating screw threads.

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]

Standard listing

Variants

Summarize
Perspective

All variants permit one or more pins to be removed to create differently keyed connectors.[7] For example any pin in a 6-pin connector could be removed, to make six different, incompatible 5-pin connectors.

More information Coding, Pins ...
M5
CodingPinsDiagramUses
A3[8]ThumbSignal[4]
4[8]Thumb
Close
More information Coding, Pins ...
M8
CodingPinsDiagramCurrent ratingVoltage ratingUses
A3[7]Thumb3 A60 Vac/dcSignal, Ethernet[4]
4[7]Thumb30 Vac/dc
6[7]Thumb1 A
8[7]Thumb
B5[7][9]Thumb3 A30 Vac/dcDeviceNet[4]
C12[7]Thumb
D4[4]ThumbProfinet[4]
P4[9]Thumb
Close
Thumb
M12 T-coded 2-pin connectors. Left, panel mount female socket. Right, inline male plug. The screw thread on the inline connectors can be freely moved regardless of gender, while the threads on the panel mount connectors are always fixed.
More information Coding, Pins ...
M12
CodingPinsDiagramCurrent ratingVoltage ratingUses
A2[10][6]Thumb4 A250 Vac/dcDC power, sensors, actuators, 1 Gb/s Ethernet[3][1]
CANopen, DeviceNet, Profibus PA[4]
3[7][6]Thumb
4[7][6]Thumb
5[7][6]Thumb2 A60 Vac/dc
6[7][6]Thumb30 Vac/dc
7[7][6]Thumb
8[7][6]Thumb
9[7][6]Thumb1.5 A
10[7][6]Thumb
11[7][6]Thumb
12[7][6]Thumb
13[7][6]Thumb
14[7][6]Thumb
15[7][6]Thumb
16[7][6]Thumb
17[7][6]Thumb
B5[6]Thumb2 A60 Vac/dcNon-Ethernet Fieldbus connections, commonly Profibus DP[3][1][4]
C3[7]ThumbAC power, including motor connections[3]
4[7]Thumb
5[7]Thumb
6[7]Thumb
D4[7][6]Thumb4 A250 Vac/dcIndustrial Ethernet protocols such as Profinet and EtherNet/IP; only Fast Ethernet (100 Mb/s) because of its two wire pairs.[3]
E2 + FE[11]Thumb
3 + FE[11]Thumb
4 + FE[11]Thumb
F2[11]ThumbDC power
3[11]Thumb
4[11]Thumb
FO2 optical + 2 electricThumb
H8[12]Thumb--
K2 + PE[11]Thumb16 A600 VacAC power (single phase)
3 + PE[11]ThumbAC power (3-phase delta)
4 + PE[11][13]ThumbAC power (3-phase wye)[13]
L2[11]Thumb12 A
16 A
63 VdcDC power
2 + FE[11]Thumb
3[11]Thumb
3 + FE[11]Thumb
4[11]Thumb
4 + FE[11][13]Thumb
M2 + PE[11]Thumb8 A600 VacAC power (single phase)
3 + PE[11]ThumbAC power (3-phase)
4 + PE[11]ThumbAC power (3-phase delta)[13]
5 + PE[11][13]Thumb3-phase motor + auxiliary wire pair[13]
P4 + PE[11]ThumbAC power (three phase)
S2 + PE[11][13]Thumb12  A300 VacAC power (single phase)[13]
3 + PE[11][13]Thumb600 VacAC power (3-phase delta)[13]
T2[11]Thumb12 A60 VdcDC power[13]
3[11]Thumb
4[11][13]Thumb
X8[12][6]Thumb--10 Gb/s Ethernet[3][1][6]
Y8[6]ThumbPower + 100 Mb/s Ethernet[6]
Close

References

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