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