The Siemens 3RT2325-2AC20 is a SIRIUS S0-size contactor with a 24 V AC coil rated for 50/60 Hz operation. Its main contacts are rated 18 A at 400 V AC-3, making it suited for switching motor loads up to that current in a standard control panel. The coil draws 0.25 A at 50 Hz and 0.28 A at 60 Hz — low enough for direct PLC output drive but verify the output's inrush capacity. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, with a mounting position that allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward. The envelope is 97 mm deep, 60 mm wide, and 102 mm high — compact for the S0 frame.
The coil uses spring-type terminals, accepting 2x 0.5 to 2.5 mm² solid or stranded wire on the control side. Main circuit terminals accept 1 to 10 mm² stranded. The auxiliary switch is integral — no add-on module needed for basic status feedback. The arcing time is 10 ms; the switching time spans 4 to 16 ms at AC, which is fast enough for most motor start sequences but not for precision timing circuits. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C. Clearances: 10 mm upward, 10 mm downward, 10 mm forward, 6 mm at the side. The auxiliary contact ratings span from 10 A at 24 V AC down to 0.1 A at 600 V AC — check your specific control voltage against the table to confirm the switching capacity.