CEE plug 16A 5-pole 3P+N+A 400V

You often find this type of plug on construction sites, in workshops and on machines and distribution boards that run on a three-phase supply. Which connection you need depends on the device and on the power supply at the location.

What does 3P+N+A 400V 16 A mean?

The designation 3P+N+A indicates that the plug has three phase conductors, plus a neutral conductor and an earth contact. The 400V is the voltage between the phases, and the 16 A is the maximum current per phase the plug is designed for. Always check that the power of your appliance stays within these values.

How do you choose the right CEE plug?

First look at the rating plate of the machine or the extension cable: it shows the voltage, current and number of poles. A 5-pole plug only fits a 5-pole socket or coupling with the same current and voltage. Also pay attention to the cable cross-section and to where you will use the plug, for example indoors or outdoors.

Safe installation and use

Connecting a plug to a three-phase cable requires technical expertise. Have the installation carried out by someone qualified for electrical work, and always switch off the power before working on the connection. Regularly check that the plug, the cable and the strain relief are still in good condition.

Frequently asked questions

What is the neutral conductor for on a 5-pole CEE plug?

The neutral conductor (N) is the return path for devices that also run on 230V, such as control components or lighting in a machine. Not every three-phase device needs the neutral conductor, but on a 5-pole connection it is present.

What is the difference between a plug (M) and a coupling or socket?

The plug (M) is the male part that you insert into a socket or coupling. A coupling or socket is the female part. Both must have the same poles, voltage and current to fit together.

Can I use a 16 A plug on a heavier connection?

No, the plug is made for a maximum of 16 A. For heavier loads, use a plug and cable designed for a higher current.