What is the extra pin used for in 63-amp and 125-amp plugs?

Last updated: 07.08.2026

The extra pin is called a pilot pin and it can be used to control additional signals (e.g. clearance of plug and socket/signal activation).

Here you will find our latest catalogs and brochures.

Here you will find our portfolio of industrial plugs and sockets.

Here you will find our solutions for different industrial sectors.