The Siemens 3RT2017-2CP04-3MA0 is a SIRIUS power contactor in size S00, built for switching motor loads in control panels. It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with a 45 mm width and 121 mm depth that fits standard panel layouts. The magnet coil uses spring-type terminals, and the main contacts accept solid or stranded wire from 0.5 to 4 mm².
Ratings and what they mean for the panel
Rated for AC-3 duty at 750 operating cycles per hour — that's the standard motor-switching load (starting and running a squirrel-cage induction motor). For heavy inrush applications like AC-4 (plugging or inching), the rate drops to 250 cycles per hour. The AC-1 resistive load rating goes up to 1000 cycles per hour. These cycle limits govern thermal rise in the contactor; exceeding them shortens contact life. Switching capacity at 24 V is 6 A, at 48 V and 60 V it's 2 A, at 110 V it's 1 A, at 125 V it's 0.9 A, at 220 V it's 0.3 A, at 400 V it's 3 A, and at 440 V it's 0.2 A. The 230 V rating is given as 2 hp, which aligns with typical motor nameplate sizing for this frame. Arcing time is 10 to 15 ms at AC — that's the interval the contacts take to extinguish the arc after opening. The mechanical life is rated at 10 million operating cycles typical, which is standard for a contactor in this class.
Mounting and environmental limits
Mounting position allows +/-180° rotation on a vertical surface, and can be tilted forward or backward by +/-22.5° on a vertical mounting surface. Clearances: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C.
Lifecycle and sourcing
Production status is current — this is an active catalog item in the SIRIUS line. No auxiliary switch is included on this variant (the order code suffix -3MA0 indicates no aux). For a panel that needs aux contacts, you'd add a separate auxiliary switch block. This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.