This plug in equipment is of industrial grade and is developed to meet CEE specifications and is defined by un interchangeable of several types of equipment owing to particular instructions. Adding to this, the units of 230 V and 400 V voltages always have a shielded contact in the 6 H position (the number 6 is located in the face of the clock). Furthermore, the shielded contact is considerable thicker than the phase models, which makes it literally impossible to change any phase and hence a wrong connection.
The equipment for the 24 V voltage has no shielded contact and is characterized by violet color. The 230 Voltage equipment is blue and red is designated for the 400 V equipment. This range of equipment have varied dimensions. The amount of poles are 2 for one phase 24 volt electric current buyers 2 P + equipment for one phase 230 V electric current buyers 3 P + equipment for symmetric three phase electric current buyers (motors.