No! It's a slow blow (T means slow; F means fast). See https://www.swe-check.com.au/pages/learn_fuse_markings.phpmany of these 20mm fuses do seem to have the H, you can ignore it (I always did). The T means it's a quickblow not a glass passivated one (slow blow).
(quickblow and slowblow always make me smile, not sure why )
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.