The Siemens SIRIUS 3RT1017-1AP61-0UA0 is a size S00 power contactor with screw-type terminals for the main current circuit. It snaps onto a 35 mm DIN rail per EN 50022 and measures 45 mm wide by 57.5 mm high by 72 mm deep — a compact footprint that fits standard panel layouts without crowding adjacent devices. Rated operating current hits 10 A at AC-12 (resistive loads) and the contactor switches 5.5 kW motor loads at 400 V in AC-2 duty (slip-ring motors, moderate overloads). For AC-4 reversing or plugging duty, the continuous current rating is 8.5 A at 400 V — a number to watch when the application cycles frequently under load.
Ratings and so-what
Pollution degree 3 (conductive pollution, typical of industrial control panels) and IP20 on the front and terminals mean the contactor is protected against finger contact but not sealed against moisture — install inside a cabinet rated for the environment. Operating temperature spans -25 to +60 °C, covering most indoor industrial conditions without forced derating. Mechanical endurance is rated at 30 million operations — a high-cycle figure that suits frequent switching applications like conveyor logic or packaging machines. The auxiliary contact block carries rated currents from 10 A at 24 V down to 0.3 A at 220 V; at 230 V it handles 6 A, enough for pilot-duty control circuits.
Wiring and coordination
Screw terminals accept 2x (0.5 to 1.5 mm²) solid or stranded, 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) — common wire sizes for motor circuits up to 5.5 kW. For type of coordination 2 (no damage under short circuit), the required upstream fuse is gL/gG 20 A; for type 1 (allow replacement after fault) it is gL/gG 35 A. Side-by-side mounting is permitted with 6 mm clearance to the side, saving rail space.