Siemens 3RT7017-1AP01 — SIRIUS Size S00 Contactor
The Siemens 3RT7017-1AP01 is a size S00 contactor from the SIRIUS family, built for switching motor loads in control panels. It carries three main poles rated for AC-3 duty up to 690 V, with screw-type terminals on both main and auxiliary circuits. The unit snaps onto a 35 mm DIN rail per EN 50022, and the mounting position allows ±180° rotation on a vertical surface plus ±22.5° tilt — useful when panel layout is tight.
What the Ratings Mean for Your Panel
The AC-3 maximum operating voltage of 690 V means this contactor handles 400 V motor circuits with headroom to spare — common in European 400 V line supplies. The AC-1 resistive load ratings are 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V; these govern heating loads or transformer switching, not motor starts. For motor duty, the AC-3 rating is the one that matters: it defines the contactor's ability to make and break locked-rotor current. Coil consumption is low — 0.8 W closing, 0.27 W holding — which keeps heat rise minimal inside a crowded enclosure. The auxiliary contacts are rated for PLC-level signals (17 V, 5 mA), so you can wire them directly to a digital input without a separate interface relay. Surge voltage resistance is 6 kV, and the insulation voltage is rated 690 V. Pollution degree 3 means it's suited for industrial environments with conductive dust or occasional condensation — typical for a non-sealed panel.
Mounting and Integration
Fastens with screw or snap-on onto 35 mm DIN rail (EN 50022). The size S00 footprint is compact: 45 mm wide, 57.5 mm tall, 72 mm deep. Side-by-side mounting is allowed, so you can gang multiple contactors without spacing — useful for multi-motor groups in a single panel row. Wire termination accepts 2x (0.5…1.5 mm²) solid or stranded, or 2x (0.75…2.5 mm²) with ferruled ends. The front and terminal areas carry IP20 protection — finger-safe but not washdown-rated; keep it inside a locked enclosure. An auxiliary switch block can be added on the front (product extension auxiliary switch is supported), and the contactor is rated for up to 750 switching cycles per hour under AC-3, or 250 under AC-4 (plugging/inching duty).