Fine fuse ratings (unit vs manual)?

Apparently, the preferred rating would be from a third category called “time-delay”, which I haven’t seen an equivalent of in the German literature.

Got the following information from Martin Reynolds:

  • Quick-blow – blows almost immediately the rated current is exceeded.
  • Slow-blow – can cope with a substantial surge current, eventually blows if the rated current is exceeded for more than a few seconds.
  • Time-delay – copes with a brief switch-on surge (0.3 seconds?) but then blows if the rated current is exceeded for longer. Better protection than slow-blow.

Greetings from Switzerland, David.

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