At 55 mm wide it fits a standard panel slot; the IP20 front and IP00 terminal block mean it's fine inside an enclosure but needs finger protection at the wiring side.
The 22 kW at 500 V and 11.4 kW at 690 V AC-3 ratings tell you this contactor handles standard three-phase squirrel-cage motors up to those power levels. The 1 200 cycles per hour at AC-1 resistive load and 1 000 at AC-3 give you the thermal cycling headroom for frequent starts on conveyor or pump duty.
The main circuit accepts solid conductors up to 2x (0.5... 1.5 mm²) or 2x (0.75... 2.5 mm²), max 2x (0.75... 4 mm²). Stranded goes to 2x (0.75... 25 mm²). At 40 °C the minimum permissible cross-section is 16 mm² — that's the thermal limit for continuous current. The coil pick-up and drop-out times are 20 to 25 ms DC, arcing time 10 to 15 ms, which is standard for this size.