What it is and what it does
The Siemens SIRIUS 3RT1017-1AP01-ZW97 is a size S00 power contactor rated for 10 A at 24 VDC coil voltage. It switches motor loads up to 5.5 kW at 400 V AC-2 duty or 8.5 A at 400 V AC-4 duty, so it handles both standard motor starting and reversing/jogging applications. The 30 million mechanical cycles mean it outlasts many smaller contactors in high-cycle conveyor or pump panels. Mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 50022. The 45 mm width and 57.5 mm height fit standard S00 panel layouts; side-by-side mounting is allowed with 6 mm clearance at the side for heat dissipation. IP20 on the front and terminals means it is protected against finger contact but not washdown — suitable for enclosed control panels.
Key ratings and what they mean for your panel
The AC-2 rating at 400 V (5.5 kW) covers slip-ring motor starting; the AC-4 rating (8.5 A) covers plugging and inching duty where the contactor makes and breaks under load. For resistive loads (AC-12), it handles 10 A maximum. The coil operating range is 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz — so a 24 VDC coil holds in from about 19.2 V to 26.4 V DC, with a dropout below roughly 18 V. Pollution degree 3 means the contactor is rated for industrial environments with conductive pollution or dry non-conductive pollution that becomes conductive due to condensation. Operating temperature range is -25 to +60 °C; maximum altitude is 2 000 m without derating. For type 2 coordination (no welding under short circuit), use a gL/gG fuse rated 20 A; for type 1 coordination (welding allowed but no fire risk), use 35 A.
Termination and wiring
Main current circuit uses screw-type terminals. Accepts solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). AWG equivalents: 2x (20 to 16), 2x (18 to 14), 1x 12. The single instantaneous contact (NO) is rated for 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V.