Siemens 3RT2325-1AL20 — SIRIUS Contactor, S0 Frame, 230 VAC Coil
The Siemens 3RT2325-1AL20 is a SIRIUS-brand contactor in the S0 frame size, designed for general switching of motor loads and resistive circuits in industrial control panels. Its AC coil is rated for 230 V at both 50 Hz and 60 Hz, drawing 0.25 A at 50 Hz and 0.28 A at 60 Hz — the slight difference matters for transformer sizing in mixed-frequency panels. The contactor carries a built-in auxiliary switch rated for 10 A at 24 V and 230 V, 6 A at 60 V, 3 A at 400 V, and 0.1 A at 600 V — covering both control-circuit and low-power load switching across common voltage levels. Mechanical life rated at 10,000,000 operations typical; arcing time 10 to 10 ms; AC switching times 4 to 16 ms.
Mounting and Integration
Mounts via screw fixing or snap-on onto 35 mm DIN rail per DIN EN 60715 — the S0 footprint (85 mm high, 60 mm wide, 97 mm deep) fits standard panel layouts. Mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward/backward, giving flexibility in tight enclosures. Clearance requirements: 10 mm upwards, 10 mm downwards, 10 mm forwards, and 6 mm at the side — plan your DIN rail spacing accordingly.
Wiring and Terminals
The magnet coil uses screw-type terminals; main contact wiring accepts 1 to 10 mm² stranded copper, while auxiliary contact terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded. Two auxiliary contacts are attachable, expanding the switching capacity for feedback or interlock circuits.
Environmental and Lifecycle
Operating temperature range is -25 to +60 °C; storage range extends from -55 to +80 °C — the storage limit is for handling, not running.