It's rated for 22 kW at 500 V AC-3 duty and 18.5 kW at 400 V AC-2, which tells you it handles standard induction motor starting and stopping, plus the heavier inrush of slip-ring or wound-rotor motors in AC-2 service. The AC-3 rating is the one you size against for a typical squirrel-cage motor start under load.
The main current circuit uses screw-type terminals; solid wire accepts 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) up to max 2x (0.75…4 mm²), while stranded goes up to 2x (0.75…25 mm²). That covers everything from control wiring to motor power tails without adapter lugs.
Switching frequency and auxiliary ratings
Maximum switching frequency varies by duty: 1200 cycles/hour at AC-1 (resistive), 1000 at AC-3 (motor start), 600 at AC-2, and 300 at AC-4 (plugging/inching). The auxiliary contacts are rated for 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, which covers typical PLC and relay interface loads.