The Siemens 3RT1017-1AB01 is a SIRIUS size S00 power contactor rated for motor loads up to 5.5 kW at 690 V AC-3 (or 5.5 kW at 500 V AC-3). It's a current-production part — no LTB or phase-out notice on this code — so it's a clean BOM line for new builds or panel spares.
Mounting & Panel Fit
Side-by-side mounting allowed — no derating gap needed between contactors on the same rail. Depth is 72 mm, which matters when you're planning gland-plate clearance or a shallow enclosure. The S00 frame means the same footprint as other SIRIUS contactors in this size class.
Ratings & Duty
AC-3 switching current is the one that matters for motor starting: 5.5 kW at 690 V or 500 V. AC-4 at 400 V is 8.5 A — that's the inching/plugging duty, lower than AC-3 because the contacts take more wear per cycle. AC-2 at 400 V also carries 5.5 kW for slip-ring motor loads. Auxiliary contact ratings cover the control-voltage range: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 0.3 A at 220 V. The 24 V coil version (this one) draws the listed current at 50/60 Hz; operating factor is 0.8–1.1 at 50 Hz and 0.85–1.1 at 60 Hz. Electrical life depends on the switching current and duty cycle; for a typical AC-3 motor start, expect well over a million cycles before contact wear becomes an issue.
Coordination & Wiring
Type 1 coordination (welding allowed but no fire risk) uses a 35 A fuse. The screw terminals accept solid or stranded wire: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or max 2x 0.75–4 mm². AWG equivalents: 2x 20–16, 2x 18–14, or 1x 12. Storage range is wider but not listed here — the operating limit governs panel ambient. The RoHS compliance date is July 1, 2006, so it meets EU substance restrictions.