The Siemens 3RT1466-6AT36 is a SIRIUS contactor in the Size S10 frame, rated for 575-600 V AC/DC coil voltage. That coil voltage puts it squarely in the 600 V class panel — common in North American industrial mains where 480/600 V control transformers feed the contactor coil directly. The screw-type coil terminals and screw fixing mean it lands on a mounting plate, not a DIN rail; plan for four M11 bolts through the base holes. The main power circuit accepts stranded cable from 70 to 240 mm² — that's a heavy lug range, consistent with a contactor sized for motor loads in the 200-400 A ballpark. The auxiliary contact block is built in (auxiliary switch: yes), with ratings starting at 10 A at 24 V and tapering to 0.3 A at 220 V for the DC side. That matters if you're switching a PLC input or a small relay off the same block.
Mounting position is flexible: vertical surface with ±90° rotation or ±22.5° tilt front-to-back. That covers most panel layouts, including top-entry gland plates. That covers unheated warehouses and most plant-floor environments.