The 3RT1466-6AP36 is a Siemens SIRIUS size S10 contactor — a four-pole power switching device with a 220–240 V AC/DC coil that lands in motor control centers and heavy industrial panels. The S10 frame handles main conductor cross-sections up to 240 mm² stranded, so it's sized for the big feeders: main drives, large pumps, or compressor starters where you need serious lug capacity.
The coil pulls in at 0.8 × rated value (176 V minimum) and holds through 1.1 × rated value (264 V), with a dropout time of 40–80 ms on both AC and DC — consistent, predictable opening for safety circuits.
Mounts via screw fixing — two 11 mm holes on a vertical surface. The enclosure can be rotated ±90° or tilted ±22.5° front-to-back, giving flexibility in tight retrofit cabinets. Keep 10 mm clearance at the sides and 20 mm forward for arcing and cable bend radius. The contactor is 210 mm tall, 145 mm wide, 202 mm deep — plan the gland plate and DIN-rail layout accordingly; it won't fit a shallow enclosure without a sub-panel extension.