I hate giving up a volt, too, but I used a 1 amp breaker for my Trig
TN70.Â* Its minimum specified voltage is 9 volts and it's maximum draw is
300 mA, so I don't see the down side of the 1 amp breaker. My panel will
shut down before 10 volts is reached, anyway.

Always open to learning something new, however.

On 12/17/2018 12:30 PM, OHM Ω http://aviation.derosaweb.net wrote:
I agree with Darryl on the 1A rating for the fuse and the alternative use of a breaker.

But to be clear about the breaker, and respectfully to Darryl, I would *NOT* use a 1A breaker as you can loose ~1Vdc* across the terminals according to the (Klixon and Tyco) specifications. I detail this gotcha' at http://aviation.derosaweb.net/presentations/#wiring.

I don't use anything less than 5A breaker for my main bus for this reason.

Thanks, John OHM Ω

*depending on load

--
Dan, 5J