It is possible to make parts for these although I’m not sure how useful they would be. The automatic transfer switch has a 4 position terminal block (circled in red here) that has no documentation that I can find as to what it is supposed to do.
without that it isn’t possible to make a complete part.
Peter
that pins are for light indicator, the 2 pins are for light ndicator for normal power while the other 2 pins are for the light indicator for emergency power
These two parts should do what you want.
inverter-12V-220V.fzpz (3.5 KB)
ats-micro-ciruit-breaker.fzpz (7.5 KB)
Peter