This is the one with the printed circuit board and current transformers "Inside" the contactors(M1-M2 & S) as well as the interconnecting cables with the Mickey Mouse connectors that connect the contactors to the "Brain" on the front panel I take it....
Parts for them come out of Puerto-Rica on a verrrrrry slow banana boat at their leisure....
I wish you luck...
I had trouble with the modules overheating & going south...After installing 2 cooling fans on the top of the starter with a filter rack down below, I have had no problem with the ones I have had problems with...
To replace the circuit boards "Inside" the contactor requires that the contactor be "Completely" taken apart..
Putting it alllll' back together is another story...
Again...
I wish you luck..
Ain't "None" of us as smart as "All" of us..