Fuses...breaking down a time delay fuse.

I was bored and decided to see what was inside these burnt fuses. The electrician at work saves them for me.





I banged my hammer on one end to take the cap off.
Inside is some sand/glass looking material.



Heres the white material:






This metal strip came out of the open end when i pour the white stuff out:







and after smashing the other end off this is what i found:



I'll test the metals later to see what i got, and that white stuff and plastic tube went in the garbage ...took about 2 mins to disassemble.

Originally Posted by sollozo45

I was bored and decided to see what was inside these burnt fuses.



Inside is some sand/glass looking material.

silica sand : The heat produced by the arc causes the fuse element to fuse with the silica sand and for the silica sand to absorb the energy. This has the effect of extinguishing the arc and stopping further current flow.