Siemens 3RT2017-2AV01 — SIRIUS Size S00 Power Contactor
Its 24 VDC coil draws 0.25 A at both 50 Hz and 60 Hz, and the spring-type terminals on the coil accept 0.5 to 4 mm² solid or stranded wire — no screw torque to verify, just strip and insert. Rated for a 10 A switching current at 24 V, this contactor handles auxiliary loads, small motors, and control transformers within the Size S00 envelope.
Switching Duty and Mechanical Life
The 3RT2017-2AV01 is rated for different switching frequencies depending on the duty class: up to 1,000 operations per hour at AC-1 (resistive loads), 750 ops/h at AC-2 and AC-3 (slip-ring and squirrel-cage motors), and 250 ops/h at AC-4 (plugging/reversing duty). The AC-3e rating also sits at 750 ops/h. The main contact rating follows a 20 to 12 scale (likely the utilization category code).
Clearance and Wiring
These gaps ensure adequate cooling and arc containment. The spring terminals accept 0.5 to 4 mm² solid or stranded wire, and up to 2x (0.5 to 4 mm²) per clamp for daisy-chaining.