Siemens SIRIUS 3RT2346-1AP00 — Size S3 Contactor with Integrated Auxiliary Switch
The Siemens SIRIUS 3RT2346-1AP00 is a size S3 contactor rated for switching motor and resistive loads in industrial control panels. It snaps onto a 35 mm DIN rail per DIN EN 60715 and can be screw-mounted as well, with mounting positions allowing ±180° rotation on a vertical surface and ±22.5° tilt forward/backward — helpful when fitting into tight enclosures. The integrated auxiliary switch (1 NO + 1 NC configuration, with the main contacts configurable as 10 N/O to 2 N/C) gives this contactor a built-in feedback or interlock path without a separate add-on block. Rated for 10 A at 24 V AC, 6 A at 230 V AC, and 3 A at 400 V AC, the auxiliary contacts cover typical PLC-level signalling and small relay loads. Mechanical life is rated at 10 million operations typical, so it handles high-cycle applications like conveyor diverters or packaging machinery. Operating temperature range is -25 to +60 °C, storage -55 to +80 °C — fine for unheated plant floors or warehouse environments.
Mounting and Wiring — Panel Integration Notes
Dimensions: 96 mm wide, 140 mm high, 152 mm deep. The 96 mm width matches a standard 5.4-inch DIN footprint; the 152 mm depth is the dimension that matters for enclosure depth clearance — verify your gland plate or backplate depth before committing the panel layout. Main contact wiring accepts stranded conductors from 6 to 70 mm² — sized for motor feeders up to roughly 30–40 kW depending on duty. Coil terminals are screw-type; the auxiliary switch terminals accept solid or stranded wire: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). Clearance: 10 mm upwards, 10 mm downwards, 10 mm sideways, 20 mm forwards — plan your DIN-rail spacing accordingly.