M12 K-code Power connector

High power for compact devices with M12 power  K-coding

   M12 has been the stand out product for circular connectors, and has been known as an interface for data and signals. In order to provide a familiar and compact interface for energy-intensive applications, a K-coding version of the M12 is now available. With four power contacts and one PE, M12 K-coding can safely transmit 7 kW at 630 V and 12 A.  

   The development of the K-coding is necessary because the continual minimizing of entire devices has influenced the data and network technology. Components become smaller, lighter as well as more efficient. Circular connectors are widely applied on various applications around the world, while M12 A-coding power supplies connectors have been reached their performance limits.

   The 7/8″ solution was the previous standard for electric drives with high power consumption. With M12 K-coding, the gap between L-coding in the low voltage range and the large 7/8″ interface has now been covered. By transmitting 7 kW, K-coding is reaching the limits of what is technically feasible.

   From a technical planning perspective, the K-coding effectively fills in the blank spot on M12 power supplies. With 630 V at 12 A AC – more than enough power is available. 

   It is concerning that packing such high power specifications in a compact M12 housing, creepage distances and sufficient user protection have to be cleared. This is accomplished by using a PE contact attached directly to the housing. It is designed as a leading contact in the mating face so that it can dissipate any voltages and even prevent a flashover onto the housing or between contacts.

   Due to its high power specifications, the PCB socket had to be protected against voltage flashovers on the contact side. All soldering posts are separated from each other by an insulator star;  this must be considered when designing the PCB.

   Its small size makes the M12 Power Connector suited for applications with little free space, like automotive, manufacturing, machine building and power transmission.