There are components which are not fused internally (i.e. T/S indicators,
Colibri etc).

Bimetal breakers are disastreous in this case as they are very slow and will
ultimately less pass about 10 times the nominal value before cutting off.
This winter I was loocking into replacing my fuses by breakers, and I
decided that I didn't want to have this crap in my gliders. The breakers to
use are magnetic ones which are pretty fast - but the price tag is very
different... so finally I kept going with fuses.

--
Bert Willing

ASW20 "TW"


"Don Hammer" a écrit dans le message de news:
...

The question is, what is the typical forward drop of a fuse? Also, why
does the breaker have such a high forward drop at low amperages?

Thanks, John

Don't know about what is typical, but look at it this way. A breaker
trips because there is a bimetalic resistor that heats up when current
flows through it. If you have resistance you get heat and a voltage
drop. Stick in Ohm's law and you can probably get an answer to your
question.

BTW - Breakers and fuses are there for one thing only. They keep a
shorted wire from turning into a foam cutter. Components are usually
protected by an internal fusable device. Always size the breaker for
the wire.