The Siemens SIRIUS 3RT2017-2LF42-0LA0 is a size S00 power contactor with a 110 V DC coil and spring-type terminals. It switches 11 A at 480 V AC and 600 V AC, and 10 A at 24 V DC — covering both motor and resistive loads in a compact 45 mm wide package that snaps onto a 35 mm DIN rail (DIN EN 60715).
Mounts on a 35 mm DIN rail per DIN EN 60715 with screw and snap-on fastening. The mounting position allows +/-180° rotation on a vertical surface and can be tilted forward/backward by +/-22.5°. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side — tight enough for dense panel layouts. Spring-type terminals accept solid conductors: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), 2x 4 mm², and solid or stranded 2x (0.5...4 mm²). No screwdriver torque needed — strip, insert, done.
Compared to the 3RT2015-1BW42, the 3RT2017-2LF42-0LA0 steps up from a 24 V DC coil to a 110 V DC coil and adds spring-type terminals instead of screw terminals — a direct swap in the same S00 footprint if your control voltage and termination preference align. No rewiring of the DIN rail or busbar needed.
Operating temperature range -40 to +70 °C; storage from -55 to +80 °C. Mechanical life typical 30,000,000 operations. Arcing time 10...15 ms. Includes an auxiliary switch. Suitable for motor loads up to 2 hp at 230 V AC.