Now solved - but I'll not delete out of respect to the helpful people who answered
Urgent
Edit: what I really need is a contact to someone who will come tonight and fix it.
Can anyone recommend an electrician who speaks English and does house call in the evening?
My electricity disappeared due to a short cut. The source is gone, that's not the problem.
The fuses inside my apartment are all fine, but the one in the hallway won't switch on (photo). It is supposed to be up, but when I turn it, it just goes back again.
While trying, I have switched off every fuse in my apartment, so they're not the problem