What this SIRIUS S0 contactor is and where it fits
The Siemens 3RT2327-2AF00 is a SIRIUS size S0 contactor with a 110 V AC 50 Hz coil and spring-type terminals on both the coil and main circuits. It's designed for screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715, which means it drops straight into a standard control panel enclosure without adapters. The S0 frame size handles motor loads up to the contactor's rated operational currents — 10 A at 24 V AC, 10 A at 230 V AC, 3 A at 400 V AC — so it's sized for smaller pumps, fans, and conveyor drives in a 400 V line.
Mounting and clearances — what the panel builder needs
Mounting position is flexible: the contactor allows +/-180° rotation on a vertical mounting surface and can be tilted forward/backward by +/-22.5°. For side-by-side grouping, maintain 6 mm clearance at the side and 10 mm upwards, downwards, and forwards. That 97 mm depth and 60 mm width on a 102 mm height footprint fits the S0 slot common across the SIRIUS 3RT2 range.
Terminal wiring — spring-cage reality
Main circuit terminals accept solid 2x (0.5 to 2.5 mm²) or stranded 1 to 10 mm². The coil connection uses spring-type terminals.