Siemens SIRIUS 3RT2317-2AF00 — Size S00 Contactor, 12 A AC-3
The Siemens SIRIUS 3RT2317-2AF00 is a Size S00 contactor rated for 12 A at 400 V in AC-3 duty, delivering 5.5 kW motor switching at 400 V. In the heavier AC-4 reversing/jogging duty it handles 4 kW at 400 V. The coil is 110 V AC at 50/60 Hz, drawing 0.25 A at both frequencies. Spring-loaded terminals on both the main circuit and the magnet coil — strip and push, no screw torque to chase. Main contacts accept 2x (0.5 to 2.5 mm²) solid or 2x (0.5 to 4 mm²) stranded. Auxiliary contacts wire the same way, 20 to 12 AWG.
AC-3 at 400 V: 12 A, 5.5 kW — this is the standard motor-start rating for squirrel-cage induction motors. AC-4 at 400 V: 4 kW — that lower figure governs plugging, inching, or reversing duty where the contactor breaks stalled-rotor current. If your application cycles through reverse or jogs frequently, size on the AC-4 number, not the AC-3 headline.
Panel Integration — DIN Rail and Clearances
Side clearance of 6 mm to adjacent devices; forward and upward clearance of 10 mm for arc venting and wiring access.
The contactor carries a substance prohibition date of 10/01/2009, indicating RoHS compliance from that date. The rated impulse withstand voltage of the main circuit is 6 kV. Mechanical endurance is typical 30 million operating cycles.