@Mike H Mottler posted:Steve H.
Thanks for the add'l info. I was too late to cancel my initial order for a 10 amp circuit breaker, so I place another order for the 5 amp version.
Your extra 10A breaker may not be a waste. Combined in series with a typical thermal breaker, it should still provide fast acting short circuit protection. I haven’t measured to see, but I’d wager the Snapac would beat any thermal breaker during a short on transformers that can normally supply 5 or more amps.