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Do You Trust Your Cheap Fuses?
(hackaday.com)
This is a most excellent place for technology news and articles.
Curiois.: Where are those kinds of fuses used?
In the UK. I've only ever seen those in cars.
Mostly vehicles, but they're a cheap and common choice for hobby electronics too.
I've seen a little 3A fuse of that style on a furnace control board. It actually saved the day when a thermostat/wiring had a short at a neighbor's house, so there's that.