Fuse

Everyone will still recognize them! The fuse that sit in the meter cupboard and make sure we do not get too much power at once.
These are perhaps 20 years old, because we have no longer the rotating fuses, Today there are switchboxes with groups where the fuse on / off can be switched.
But it had some..... if there was a short circuit and one after another the pit behind the fuse you saw jump off the fuse. For us kids always an exciting affair. Nostalgia!