A delay fuse is a fuse that lasts a little longer than the regular fuses.
The purpose is when the fuse reaches it's blow out point for a split second
and rather than blowing imediately...it will hang on through that split
second...When a constant amperage overloads the fuse then blows... A good
example of these delay fuses or what I always referred them to...."Slow Blow
" fuses ... are used in stereo speakers and amplifiers.
A furnace for example, could draw a lot of amperage when the fan motor
starts....but after running, it draws very little amperage. The "slow Blow"
fuse would be good fopr an application like that....hope that was of some
ChrisGW wrote:>What is the purpose of a "delay fuse" and where is it used?
They allow a few seconds of overamperage to handle the greater demand for juice
on certain system start-ups. They're used in the fuse box, of course. Tom
Work at your leisure!
The only good use I can think of off-hand is for a circut
that's driving a fairly heavy motor, at near capacity.
Generally that would have been kitchens with big-ass
blenders of the "rat homogenizer" size, in older homes,
and maybe garage door-openers and washing machines now.
The idea is to keep the start-up surge from blowing your breaker,
when the actual operating current is well within the capacity
of the circut.
Since the power requirements of your kitchen equipment probably
don't require it any more, I wouldn't use them at all. If you
find yourself blowing fuses, THEN think about whether that's
as appropriate place for them.
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