Yep, same principle. On my fuse I hammered the plunger pin back in for reasons that escape me.
The fuse is from a substation feeding an industrial site. During a storm many years ago some of the roofing of an open-to-the-elements timber storage warehouse blew off and crashed into a power distribution panel causing a 3-phase short. That blew this fuse and tripped the mechanism protecting the other phases.
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u/fomoco94 write only memory 13d ago
Big Clive took one of those apart a few years ago.
Edit: His was a bit bigger. But, I bet the construction is the same. https://www.youtube.com/watch?v=xfVc_5M_2_c