The Siemens 3RT2047-1AC20 is a SIRIUS 3RT series power contactor, three-pole, rated for AC-3e/AC-3 duty at 110 A — that's the motor-switching current for starting and stopping squirrel-cage induction motors under full load. At 400 V, that translates to 55 kW of motor power. The 24 V AC coil (50/60 Hz) pulls in reliably across the standard control voltage found in many European and Asian panel designs. Size S3 means this contactor occupies a defined physical footprint in the SIRIUS modular system — it's a mid-frame size, not the compact S0 or the larger S6/S10 frames. The screw terminals accept standard power and control wiring without special tooling.
RoHS compliant since 31 July 2018, and REACH Article 33 duty-to-inform data is available. No export restrictions apply (AL: N, ECCN: N). The manufacturer provides the standard compliance documentation pack with the shipment.