SIRIUS Power Contactor, Size S3
The Siemens 3RT1046-3AG16 is a SIRIUS S3 power contactor rated for motor switching at 55 kW at 500 V and 45 kW at 400 V in AC-2 duty, with a mechanical life of 10 million operations. Screw-type terminals on the main circuit accept 2x (10... 50 mm²) stranded or 2x (0.25... 2.5 mm²) solid wire; auxiliary control wiring uses 2x (2.5... 16 mm²) solid or stranded.
Electrical Ratings and Duty Cycles
AC-3 switching (standard squirrel-cage motors) is rated at 850 operations per hour; AC-4 (plugging/inching) at 250 cycles per hour; AC-1 (resistive loads) at 900 cycles per hour. Auxiliary contacts handle 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, covering typical PLC and relay control loops. Arcing time spans 10 to 15 ms; pick-up/drop-out time is 10 to 25 ms at rated AC control voltage.
Operates from -25 °C to +60 °C with storage range of -55 °C to +80 °C; pollution degree 3 suits industrial environments with conductive contamination. IP20 on the front with cover or box terminal; the terminal body itself is IP00 — plan for enclosure protection if washdown or dust exposure is present. Dimensions are 146 mm high, 90 mm wide, 139 mm deep — fits standard S3 contactor footprint on DIN rail.