I am a planner of electric schemes. I am using for some time the system with the compact motor starters and everything it’s ok. I use Schneider. I was trying to use the series 3RA6 of the Siemens but the delivery time were too long so I have to changed mind.
For a great number of motor starters I’m using the Bus Bar Systems from Siemens or Wohner and that it increases the speed of wiring. For the connection between the magnetic protection and the contactor the builders make an accessory always available.
I apologize for my english.