prEN IEC 63171-7:2026

This part of IEC 63171 covers shielded free and fixed connectors with 2 ways up to 7 ways for data and power transmission and specifies the common dimensions, mechanical, electrical and transmission characteristics and environmental requirements as well as test specifications respectively.
The circular connectors described in this document are either equipped with an M8 or M12 screw-locking mechanism or, for M12 - size 12 - a quick-locking push-pull mechanism with a size derived from that or both mechanisms combined. Additionally, connectors with rectangular housings are equipped with a quick-locking latch retention mechanism. For the sake of simplicity, the connectors’ sizes are denoted as "size 8" "size 12" and "size R" in this document.
This document provides multiple mating interfaces each of which is associated with a coding preventing the mating of incompatible male and female connectors. Within each of the sub-families of connectors described in this document, the relevant codings are referred to as "Type x", where ‘x’ is represented by a Roman number.
For all codings including power and data in the same interface (M12 up to 7-way, codings type I through VII),two ways and the internal shield elementand the optional shield pin intended to be connected to the cable screen support differential data transmission with frequencies up to 600 MHz by meeting the requirements of Category B as defined in IEC 63171.
NOTE 1 The connectors are intended to be used for single-pair Ethernet (SPE) according to IEEE 802.3 references.
IEEE Standards/projects: 10BASE-T1L (IEEE 802.3cg) 10BASE-T1M (IEEE 802.3da), 100BASE-T1 (IEEE 802.3bw), 1000BASE-T1 (IEEE 802.3bp).
NOTE 2 Power over Data line (PoDL) power supply according to IEEE 802.3bu and IEEE 802.3dd can be optionally used for the two ways intended for data transmission, even in addition to the power supply provided through the dedicated power ways.
The M12 up to 7-way codings differ by their power transmission capabilities and intents. The additional ways provide for DC power transmission with up to 63 V/16 A and 600 V/16 A or AC power transmission with up to 600 V/16 A (single-phase) or 480 V/8 A (three-phase). See Table 19 and Table 20 for the voltage and current ratings, and Table 14 and Table 15 for the pin assignments for the individual codings.
Some codings feature a PE or FE pin respectively for safety or functional purposes.