Siemens 3RT2017-1AK62 Three-Phase Contactor 120V Coil

Siemens 3RT2017-1AK62 is a 3-pole power contactor (size S00) designed for AC-3 motor-control duties, delivering three main normally open contacts plus one normally closed auxiliary contact in a compact, screw-terminal package. The coil is specified for 110 V AC at 50 Hz or 120 V AC at 60 Hz, making this variant suitable for both common 50/60 Hz power systems; the model in question uses the 120 V coil for 60 Hz operation. The main circuit is rated for 12 A at 400 V (AC-3), which corresponds to about 5.5 kW for a 400 V motor load.

Built for industrial environments, the contactor features IP20 protection on the front and a coil-to-main isolation rating of 400 V. It is fabricated for reliable cycling with a mechanical life specification up to 30 million switching cycles and includes a screw-terminal, single-base design alongside its built-in auxiliary contact for expanded control options. Common applications include starting and stopping three-phase motors in machinery such as conveyors, pumps, and fans, where a compact, 12 A-rated control device is appropriate and where a dedicated auxiliary contact enhances control schemes.