Motor switching and coil selection
The 3RT2016-2AP01-1AA0 is a size S00 power contactor rated for AC-3e/AC-3 duty at 9 A, handling 4 kW on a 400 V three-phase line. That AC-3e rating means it's designed for starting and stopping squirrel-cage induction motors — the load current during start is the rating that governs contact life, not the steady-state. The 230 V AC coil pulls in at 50/60 Hz, so verify your control voltage matches; a 24 V DC coil variant exists in the family if your panel runs on DC logic. The single NO auxiliary contact is built in, no add-on block needed for a basic feedback signal.
Termination and panel fit
The S00 footprint is compact: 47 mm wide, so it fits a standard DIN rail with room for a downstream overload relay in the same row. Upright mounting position is specified; if you lay it sideways, check the derating curve in the manual.