The M12 family of connectors are used in many different applications from signal transmission to sensor technology and data transmission in field bus technology. The new M12 power connectors with T- and S- coding extend the usage into the power range. CONEC now provides solutions for compact and economical power connectors resulting from the miniaturization of drives, encoders and decentralized equipment cabling. The connectors with S-coding have been designed for 630 V and 12 A and with T-coding for low voltage supply of 63 V and 12 A.
http://www.conec.com/en/2014/11/19/m12x1-power-conecctors-sockets/