Rated for up to 1 000 switching cycles per hour under AC-1, AC-2, and AC-3 duty, and 300 cycles per hour under AC-4, it handles frequent inching or jogging without derating the mechanical life of 10 million operations typical for this contactor family.
The S0 frame is the workhorse size for motor loads up to around 7.5 kW at 400 V AC-3 (the exact motor rating depends on the coil voltage and auxiliary contact configuration). That matters when you are packing multiple contactors side-by-side — you can butt them at 6 mm spacing without losing arc-quenching performance. The screw-type coil terminals accept solid or stranded wire from 1 to 10 mm², and the main contact terminals accept two conductors per clamp (2x 0.5...1.5 mm² or 2x 0.75...2.5 mm²). That is enough for paralleling a motor lead and a feedback wire without a separate terminal block.