Been using them for almost 8 years now along with PH-180s for track power (purchased them a couple years before building a more permanent layout). They always trip before the PH-180s (but to be fair I'm using their 8 amp setting). 8 amps was my initial trial setting when first powering up the track. Nothing has ever exceeded the 8 amps during use so far and I've just left them as first installed.
My layout is command only (DCS and Legacy). I used most of the PSX's optional features, remote LEDs, alarm, manual reset button, etc. Those are all mounted in the fascia of the layout table near the power cart. They work quite well and as advertised like GRJ said above. No electronic failures so far.
