AC-2 covers slip-ring motors with moderate starting currents; if your load is a standard squirrel-cage motor (AC-3), the rating will differ, so verify the duty class against your application. The 4 NO main contact arrangement gives you four independent poles for switching, useful for two-speed motors or separate load groups where you need isolation per phase set. For stranded wire, it handles 1 to 6 mm² per clamp. This covers the typical motor feeder sizes up to around 4 kW at 400 V without needing terminal adapters. The auxiliary contact block is rated for switching at various control voltages: 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. These are the figures to check when designing the control circuit — the 24 V rating is the one most PLC outputs will drive, and it comfortably handles a typical relay or contactor coil load. The coil operates at 50 Hz with a rated voltage of 200 V, and at 60 Hz it accepts 200 to 220 V. The tolerance band is 0.8 to 1.1 times nominal at 50 Hz, and 0.85 to 1.1 at 60 Hz, so the coil holds in through typical line sags down to about 160 V at 50 Hz.
These are the values to coordinate with your upstream protection device.