Has anybody ever melted the plastic and holder of an Automotive ATC fuse, without blowing the fuse itself?

I had a cheap AutoZone in-line fuse holder with a 30 Amp fuse on the 12 volt line between the DC-2-DC and accessory battery, and today one side of the holder and one side of the fuse melted and made a nasty burning smell while I was driving down the road.

This was especially concerning with my new Leaf Modules just recently installed ;>

I was actually quite relieved to find it was "just" a melted fuse. The funny thing is that the fuse itself didn't blow, it still has connectivity when I touch inside where the leg used to be.

The only thing I can think of is that while I was moving wires around for the install of the new charger the fuse got slightly jolted and one leg had a loose contact with the holder, causing a high resistance connection and lots of heat without going over 30 amps.

Impressively melted photos here:
http://www.summet.com/blog/2016/01/04/melted-fuse-leg/

Jay
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