The Siemens 3RT1016-2RB41-0KS0 is a Size S00 power contactor from the SIRIUS 3RT1 series, rated AC-3 9 A and 4 kW at 400 V for switching motor loads in control panels. The 24 V DC coil with integrated surge suppressor handles the pick-up and drop-out without external suppression for DC switching.
AC-3 9 A is the motor-switching rating — it handles the inrush of a 4 kW, 400 V three-phase induction motor (typical for a small conveyor or pump). The DC coil holds at 24 V nominal; verify the control circuit can supply the inrush current without voltage sag. Spring terminals save wiring time vs screw clamps but require ferrules on stranded wire for reliable contact.