Steve, I think the push button variety is easier to mount in a panel. Problem is that if one looks into the catalog where it describes the numbering system, there are a huge number of variations, and no one can stock them all.
Over the years, several forumites have designed various electronic packages for train use, and they or others have packaged component kits which they sold. I wish someone would do that for an electronic breaker such as is found in the PH-180 transformer, the circuit for which has been posted on the forum.
