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Jeff Liebermann Jeff Liebermann is offline
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Default Do thermal fuses fail from old age?

On Sat, 24 Mar 2012 08:48:09 +1100, "Phil Allison"
wrote:

If you run it near it's rated
maximum current (usually 5A, 15A, or 30A), it will eventually get warm
enough to melt the wax and trip the fuse.


** MASSIVE BULL**** !!!!!!!!!!

With a short circuit across
the power line, the self-heating will blow the thermal fuse almost
instantly.


** Nope - it will trip the supply breaker.

With a 10 times or more overload, breakers trip in a few milliseconds.

You stupid asshole.


See: UL 60691 for testing of the the thermal fuse:
http://bbs.dianyuan.com/bbs/u/32/1122972217.pdf
Section 10.8 discusses its use as a short circuit protection
overcurrent fuse. (This is rev 3. Rev 5 is the current version).



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