The Siemens 3RT2017-2GG22-ZW97 is a SIRIUS power contactor in Size S00 — the smallest frame in the series, sized for motor loads up to about 5.5 kW at 400 V AC-3 (typical). It snaps onto a 35 mm DIN rail per DIN EN 60715 and measures 45 mm wide by 70 mm tall by 73 mm deep, so it fits a standard 45 mm slot in a panel. The coil terminals are spring-type, which means no screwdriver needed for the control wiring — strip, push, done.
The contactor is rated for different switching frequencies depending on the duty category. At AC-1 (resistive loads) it can cycle up to 1,000 operations per hour; at AC-3 (squirrel-cage motors, starting and running) it's 750 ops/h; at AC-4 (plugging, inching, reversing) it drops to 250 ops/h. An auxiliary switch is built in (20 to 12 on the main contacts), so you get a feedback signal for the PLC or status lamp without adding a separate block. The auxiliary contacts are rated at 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V — check your control voltage against that curve.
Wiring and panel integration
The main and coil terminals accept solid or stranded wire from 0.5 to 4 mm² (2 x 0.5 to 4 mm² for dual-wire terminations). The spring-cage design holds the conductor without retightening — good for panels that see vibration. That's enough for standard 45 mm DIN-rail spacing, but if you're packing multiple contactors side-by-side, keep that 6 mm side gap for arc flash clearance.