OneMoreFarang Posted April 7 Share Posted April 7 I saw these videos today about low quality fuses. Louis puts 8A through a 2A fuse and the fuse does not blow. Bad. See yourself! I will now check my AliExpress fuses which I use for my LED lights. Link to comment Share on other sites More sharing options...
Crossy Posted April 7 Share Posted April 7 Ouch, at least it did open eventually! I've seen fake MCBs that were literally just a switch!!! This is the datasheet for similar devices from Littelfuse (a known quality brand) https://www.littelfuse.com/~/media/automotive/datasheets/fuses/passenger-car-and-commercial-vehicle/blade-fuses/littelfuse_atof_datasheet.pdf The characteristic curves from that datasheet. Their 2A fuse should open in less than 0.1s at 8A! Link to comment Share on other sites More sharing options...
OneMoreFarang Posted April 7 Author Share Posted April 7 Thanks, Crossy. In the second video the Swiss engineer shows such charts from Bosch automotive fuses. 1 Link to comment Share on other sites More sharing options...
carlyai Posted April 7 Share Posted April 7 Why do you need a fuse on a LED? Link to comment Share on other sites More sharing options...
OneMoreFarang Posted April 8 Author Share Posted April 8 2 hours ago, carlyai said: Why do you need a fuse on a LED? I have 200W 24V power supplies connected to LED controllers which are connected to several LED strips. The LED controllers have several fuses like above. If there is a shortcut in one of the strips the fuse will cut that connection - at least if the fuse works the way it should work. Something like this: 1 Link to comment Share on other sites More sharing options...
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