Its magnet coil operates on 24 VDC, drawing 6 A at rated voltage, and uses screw-type terminals for main and coil connections. The main contacts are rated 52 A at 480 V in AC-3 duty (motor switching), making it suitable for controlling induction motors up to that current draw.
Dimensions: 55 mm wide, 114 mm high, 174 mm deep — the depth is the key dimension to check against enclosure depth and door clearance.
Duty Ratings & Switching Life
Rated for AC-3 motor switching at up to 800 operations per hour, AC-1 resistive load at 1000 ops/h, AC-2 at 600 ops/h, and AC-4 (plugging/inching) at 250 ops/h. Mechanical life typical at 10,000,000 operations; arcing time 10–20 ms, closing time 10–18 ms. The S2 frame size and 55 mm width place it between the smaller S0 (3RT2016 series) and larger S3 frames — it handles higher motor currents than the S0 but fits the same DIN footprint width as S0 (55 mm).
The product is part of Siemens' SIRIUS line, which carries IEC/EN 60947-4-1 compliance and UL/CSA certifications typical for industrial contactors.