For a 400 V three-phase motor, that translates to roughly 5.5 kW in AC-3 duty (start/run), though the AC-4 figure is the one that governs if your application cycles the contactor while the motor is under load. The built-in varistor surge suppressor clamps the coil's turn-off spike — no external snubber needed for the DC coil circuit. Coil holding power is 5.4 W DC, steady-state, so the 24 VDC supply must deliver that continuously while the contactor is picked up. This is the spec your panel designer needs for the SCCR label. The front face carries IP20 — protected against finger contact. The terminal area is rated IP00, meaning the connection points are not touch-safe when the panel door is open.
Screw-type terminals on the main circuit accept 2x (1 to 2.5 mm²) stranded, 2x (2.5 to 6 mm²), or up to 1x 10 mm². The coil/auxiliary terminals take 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, max 2x 4 mm².