Its AC-3e/AC-3 rating of 65 A and 30 kW at 400 V means it is sized for a 30 kW induction motor on a 400 V line — the AC-3 duty class covers starting and disconnecting squirrel-cage motors under full load, which is the standard for most conveyor, pump, and fan applications. The 230 V AC 50/60 Hz coil is a common control voltage in European panels; the built-in 1 NO + 1 NC auxiliary contact set handles feedback or interlocking without an extra block. Termination is split: screw terminals on the main circuit for high-current power wiring, spring-loaded terminals on the control and auxiliary circuit for faster, vibration-resistant wiring of the coil and aux contacts. This combination is typical on Siemens S2 contactors — the spring-cage side saves time on control wiring while the power side keeps the torque security of screw clamps.
RoHS compliance is confirmed since October 2014, and REACH candidate-list information is available from Siemens. No special export restrictions apply (AL: N / ECCN: N).
The S2 frame size mounts on a standard DIN rail (EN 60715) and occupies roughly 55 mm width by 114 mm height by 130 mm depth. The multi-unit packaging variant (pack of 15) suggests it is also stocked in bulk for panel builders running multiple identical motor starters. The spring-loaded control terminals accept ferruled stranded wire up to 2.5 mm²; strip length is 8–10 mm for reliable cage clamping.