It's rated 22 kW at AC-2 duty on 400 V, and 30 kW on 500 V — those numbers tell you it's sized for medium-horsepower three-phase motors, not light resistive loads.
The footprint is 55 mm wide by 112 mm tall by 115 mm deep — that's a compact S2 frame that leaves room for an overload relay alongside it.
The 22 kW at AC-2 400 V rating is the one to look at for standard squirrel-cage motor starting — AC-2 covers slip-ring motors and some wound-rotor applications, but it's also a conservative benchmark for across-the-line starting of induction motors. The 30 kW at 500 V gives headroom if your line voltage runs higher. Mechanical life is listed at 10 million operations typical, and the coil holds in at 85% of rated voltage at 60 Hz — so it's not going to drop out on a sagging line.