The Siemens SIRIUS 3RT2017-1BF42 is a Size S00 power contactor designed for switching motor loads in control panels. It mounts on a 35 mm DIN rail per DIN EN 60715, with screw and snap-on fastening, and accepts a 110 V AC coil. The contactor measures 45 mm wide by 73 mm deep by 58 mm high, fitting standard panel layouts without crowding adjacent devices.
Coil and Contact Ratings
The magnet coil is rated 110 V and picks up at 0.8 of rated value, so it pulls in reliably at 88 V and above. Screw-type terminals on the coil accept solid or stranded wire from 0.5 to 4 mm² (single) or 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², and 2x 4 mm² for paralleled conductors. The auxiliary switch is rated for 10 A at 24 V, 2 A at 48 V and 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 — covering pilot-duty and PLC-level signals across common control voltages.
Switching Frequency and Operating Conditions
Maximum switching rate depends on duty: 1,000 cycles per hour at AC-1 (resistive), 750 cycles per hour at AC-2 and AC-3 (motor starting/running), 750 at AC-3e, and 250 at AC-4 (plugging/inching). The contactor operates from -25 to +60 °C and stores from -55 to +80 °C. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward, giving flexibility in tight enclosures. Clearances: 10 mm upwards, forwards, and downwards; 6 mm at the side.