The Siemens 3RT7017-1AV02 is a Size S00 contactor with three normally-open main contacts, rated for AC-3 switching duty up to 690 V maximum. It handles motor loads up to the AC-3 current limits — 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — which governs the actual motor size it can switch under load. The 3-pole configuration covers three-phase circuits. The holding power is low enough to keep heat buildup minimal in a crowded panel.
The S00 footprint is compact — 45 mm wide, 57.5 mm tall, 72 mm deep — so it fits standard distribution boards and leaves room alongside other S00 devices. Side-by-side mounting is allowed, which saves rail space when stacking multiple contactors. Terminals are screw-type on both main and auxiliary circuits, accepting 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²) finely stranded with ferrules. IP20 on the front and terminals means finger-safe when installed in an enclosure — no extra shrouding needed for basic touch protection.