A (nice) fuse box!
Ciao, Ale.
three-phase current fuse box
Well, I'm not sure, but the image is titled, "Fuseboard" 
From an incomplete electrical panel.
It only has wires connected to one of the bottom terminals.
Fuse bus wires are missing.
That's what I think it is, but maybe someone else has other ideas or other information.
I agree with @paulpaulson
3 Phase fuse board with some very nice wiring.
it's not energized as yet but it belongs to a fusebox
The final wiring of L1,L2 and L3 is missing.
'Something' generated by ChatGPT.
Could be fuses, sure. My first thought was gas tube protectors. The bend radius on the wires is too small in places.
@PerryBebbington The white circles are a ceramic fuse cover with a glass window, the fuse covers screw and retain a cartridge fuse between the copper bus and the yellow circuit wire. The end of the cartridge fuse has a "pip indicator" that falls away when the fuse is blown. It looks as though the top left fuse holder may be blown or empty of a cartridge.
Ah! Happy memories of my days with BT, where Strowger exchange bus bars were bare 15cm wide copper plates a good 8mm thick, stacked six deep, and carrying almost unimaginable (to me) currents.
Horror stories of the painter who rested his paint can across a set...
I have seen similar and it is truly horrifying
Yes, similar stories involving various tools. Don't know if they were true. Never saw a scorched bus bar, even less a melted spanner or whatever. I don't think the -50V bars were bare though, they had blue plastic covering.
Where did you work? I was around Nottingham.
Nottingham Derby area
Which exchanges?
When?
As an electrician at a factory in Spondon
I was an AEE in BT HQ in Central London, but had to supervise installations around the country - Sheffield, Guildford, Lancaster, Keybridge.
Hated it - too slow-moving. Left after two years.
Finished my time as an electronic/electrical tech in Tennessee , pretty much no difference between countries
@PerryBebbington I wasn't sure if "when' was directed at me or not but it was early 70's
Ah! As we have already mentioned BT and telephone exchanges I thought maybe that's where you worked. Thanks for the clarification. 'Factory in Spondon' British Celanese? Before it exploded?