Socket Connector – Meaning of Socket Connector Labelled ‘A’

socket

I have disassembled a (single phase) mains outlet and found the usual L, N and ground cable connectors but to my surprise there is also a 4th connector labelled 'A':

enter image description here

Green/Yellow is ground, blue is neutral, black is live, but what is orange? Symbol above 'A' looks like some kind of a switch or breaker.

Front looks like this (Switzerland type J): enter image description here

Going by the numbers on it this seems to be the main part:
https://online-katalog.feller.ch/kat_details.php?fnr=87303.F.61 (sorry, no english version)

Best Answer

There are three sockets:

  • two are fed from black L-connection
  • the third one with the switch symbol next to it is fed from orange/red A-connection.

This can be used in conjunction with a switch in such a way that you can switch the one output on and off. Particularly useful with a built in switch right next to the socket I guess.

Otherwise if you don't want to use the separate socket switched, you can of course simply use a jumper wire from black to orange tab, as noted by @troubleshooter in the comments below.

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