It is rated 37 kW at 500 V for AC-3 duty, which is the standard category for squirrel-cage motors — so this contactor handles motor starting and running currents up to that power level without welding the main contacts during inrush.
The S3 frame footprint (146 mm height, 70 mm width) fits standard DIN-rail enclosures; its 139 mm depth clears most gland plates and back-panel wiring channels.
Solid wire accepts 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), or max 2x (0.75…4 mm²); stranded accepts 2x (10…50 mm²). The range covers both control-circuit pilot wiring and power-circuit cable up to 50 mm² — common for a 37 kW motor feed. The terminal enclosure is IP00 (open), but the front with cover or box terminal achieves IP20, which is finger-safe for panel-side access.