What it is and what it does
The Siemens 3RT1466-6LA06 is a SIRIUS size S10 contactor with an integrated 2 NO + 2 NC auxiliary switch block. It's a panel-mount power contactor for switching motor loads and resistive loads in industrial control cabinets. The auxiliary contacts are rated for switching at 24 VDC up to 10 A, at 230 VAC up to 6 A, and at 400 VAC up to 3 A — so it can handle both the coil circuit of a downstream contactor and a PLC digital input signal on the same block.
Mounting and wiring fit
Fastens with screw fixing through an 11 mm hole. The mounting position allows vertical surface mounting with ±90° rotation or ±22.5° tilt front-to-back, so it fits into tight enclosures where the panel isn't perfectly vertical. Power terminals accept stranded cable from 70 to 240 mm² — that's heavy cable, sized for the full rated current of the S10 frame. The auxiliary terminals take 2x 0.5 to 1.5 mm² solid or 2x 0.75 to 2.5 mm² stranded, max 2x 4 mm². Side-by-side mounting is allowed, with 10 mm clearance to the side and 10 mm upward/downward. Overall dimensions: 210 mm high, 145 mm wide, 202 mm deep. That depth is the body plus the arc chamber — plan for at least 20 mm forward clearance for wiring and arc venting.