Hi Board and Trackers in general,
For your info and consideration.
I use the DCC version of these microprocessor controlled intelligent circuit breakers on my 2 rail layout. The DCC version operates flawlessly.
Using these vastly improves the sensing and trip time on my layout. Greatly superior to what I had on my 3 rail layout. Much faster and more versatile protection than the previous century's old fashioned heat sensing circuit breakers.
I can't vouch for the 3 rail AC version. But, I will swear by the 2 rail DCC version.
They're expensive. But, then can it cost $200 or so to fix and out of warranty engine with a bad command board.
Hope this helps.
Bill