QT,

All breakers suffer a voltage drop of some amount (see more below). Therefore some pilots like fuses as they have no voltage drop at all. I went away from fuses as they don't give me a positive indication of a trip, are difficult to fix in (soaring) flight, and are fragile.

Breaker voltage drop - As you probably know current is passed inside of breakers through a tiny "heater" (for want of a better phrase). The more current, the hotter the "heater" gets, until finally things get too hot and the heat trips a bi-metallic strip, and the current flow is interrupted. This "heater" can be thought of as a resistor. Small value breakers have a high value resistance and thus they drop a high voltage across them. For a 1A Tyco W31 breaker this is 0.6v! Ouch! A 5A breaker only drops 0.15v, 10A = 0.1v, 15A = 0.09v, etc. That is why I only recommend 5A breakers and above to be used. These are maximum voltage drop values so I am still holding with choosing breakers over fuses. See the specs at See https://www.alliedelec.com/m/d/6526f...72ec951f9f.pdf.

PS - I had stated before that ONLY switch/breakers like the Tyco W31 may be used as a switch. I said that pull-type breakers should NEVER be used as a switch. I just found out that the pull-type Tyco W23 breaker is rated to be used as a switch! Huzzah! But I digress.

- John OHM Ω