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Posted

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.

 

 

 

Posted

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!

 

image.png.209cf1444289c52c6a7f55cbcb08ca7c.png

 

 

 

 

Posted
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:

QuinLED-Dig-Quad-AB_v3r1-709x500.png

 

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