What this SIRIUS contactor is and where it lands
The Siemens 3RT2325-2AL20 is a SIRIUS contactor in size S0, built for switching motor loads and resistive circuits in industrial control panels. It carries a 230 VAC coil rated at both 50 Hz and 60 Hz, with spring-type terminals on the coil side — no screwdriver needed for the control wiring. The main contact set is rated for AC operation with a switching time of 4 to 16 ms and an arcing time of 10 ms, so it handles the break-and-make cycle cleanly on inductive loads. Mechanical life is typical 10 million operations, which puts it in the standard-duty range for a panel with moderate cycle rates.
Mounting and panel fit — the DIN-rail reality
This contactor mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. The footprint is 60 mm wide, 102 mm tall, 97 mm deep — that depth matters when you're laying out a gland plate or door clearance. Mounting position allows +/-180° rotation on a vertical surface and can be tilted forward/backward by +/-22.5°, so it fits odd orientations in a crowded enclosure. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, 6 mm at the side. That side clearance is tight — you can stack them close, but leave the vertical gaps for wiring access.
Wiring — spring terminals on the coil, screw on the mains
The coil connection uses spring-type terminals (push-in style), accepting 2x solid 0.5 to 2.5 mm² or 2x stranded 0.5 to 2.5 mm². The main contact terminals accept solid or stranded wire from 1 to 10 mm². That's a solid range for panel wiring — the coil side gets the smaller control wiring, the mains side takes the power conductors up to 10 mm². An auxiliary switch block is attachable (2 units possible), so you can add feedback or status contacts without extra DIN rail space.
What the ratings mean for your load
The contactor's rated operational current at 24 V is 10 A, at 48 V is 2 A, at 60 V is 6 A, at 110 V is 1 A, at 125 V is 0.9 A, at 220 V is 0.3 A, at 230 V is 10 A, at 400 V is 3 A, at 500 V is 2 A, and at 600 V is 0.1 A. Those are the current-carrying capacities at those specific voltage levels — they define the load you can switch, not just the coil. The 230 V 10 A rating is the headline figure for a standard motor circuit at that voltage. Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C, so it handles the thermal extremes of a typical panel environment.