The headline motor ratings: 30 kW at 500 V (AC-3 duty) and 22 kW at 400 V in AC-2 duty — that second one is the rating for slip-ring motors or soft-start applications where the contactor makes/breaks under reduced current. The contactor also handles resistive loads (AC-1) up to the same thermal current class, but the motor ratings are the ones that govern sizing.
Main circuit terminals are screw-type, accepting solid conductors up to 2x 4 mm² (or 2x 0.5–1.5 mm²) and stranded up to 2x 25 mm². That covers most motor leads up to the size S2 frame. The coil connections share the same terminal block.