The Siemens 3RT6024-1AR60 is a SIRIUS S0-size power contactor with screw-type main circuit terminals, rated for AC-3 and AC-3e duty up to 690 V. It delivers 23 kW at 400 V and 40 kW at 690 V, both at 60 °C ambient — the temperature you'll see inside a closed panel, not the idealised 40 °C. That's the number to use for your motor sizing, not the 40 °C line. Coil draw at 50 Hz is 0.25 A, at 60 Hz it's 0.28 A — expect the higher figure in North American plants. The contactor snaps onto a 35 mm DIN rail per EN 50022 and can be rotated ±180° on a vertical surface, or tilted forward/backward ±22.5°, which helps when the gland plate crowds the panel layout. The auxiliary contact block carries 6 A at 24 V, 10 A at 230 V, and 3 A at 400 V — enough for a PLC input or a pilot relay, but watch the 690 V limit (1 A). Mechanical life is 10 million operations typical; electrical life at AC-3 is 1,000 operations per hour max, dropping to 300 for AC-4 (plugging/inching). If your application cycles faster than that, step up to a larger frame or a dedicated reversing contactor pair.
Width is 45 mm, depth 97 mm, height 85 mm — fits a standard S0 footprint. Side-by-side mounting is allowed (no derating gap), so you can pack several in a row on the same DIN rail. Wire the main circuit with 10 mm² minimum at 60 °C; the screw terminals accept 2x 0.5–1.5 mm² or 2x 0.75–2.5 mm² for the coil/auxiliary connections. Strip length is not given here, but the 2x range suggests ferruled stranded for reliability. No IP rating is listed, so it's not for washdown or outdoor use without an enclosure.