At AC-4 duty (plugging, inching, reversing) the contactor is rated 29 A at 400 V. That is the heavy switching category for frequent motor reversals or jogging — the 250 cycles-per-hour maximum at AC-4 tells you this part is built for that abuse, not just continuous running. For motor starting (AC-3), the contactor handles 18.5 kW at 500 V. That is the standard rating for squirrel-cage motors during start and run, and the 1,000 cycles-per-hour AC-3 rating means it handles frequent starts on a conveyor or pump line. The auxiliary contacts are rated 10 A at 24 V, 6 A at 230 V, and 0.3 A at 220 V DC. For a 24 VDC PLC interlock circuit, the 10 A rating gives plenty of headroom.
The solid wire range is 2x (0.25 to 2.5 mm²) for control wiring, and stranded accepts 2x (0.75 to 25 mm²) for the power loop. At 40 °C, the minimum permissible cross-section is 16 mm² for full rated current — that is a #6 AWG equivalent, so plan your lugging accordingly. The front face carries IP20, meaning finger-safe when installed in an enclosure.