It is rated for AC-3 switching duty at up to 750 operating cycles per hour, which means it handles motor loads like conveyors and pumps in a standard control panel without overheating the coil or contacts.
The AC-3 maximum switching rate of 750 1/h tells you this contactor is sized for frequent motor starting — think conveyor sections or pump cycles — without derating for thermal buildup. The AC-4 maximum of 250 1/h covers plugging and inching duty, so if your application reverses or jogs the motor, you stay within the contactor's thermal limit. Spring-type terminals on the magnet coil accept solid or stranded wire from 0.5 to 4 mm², and the main contacts accept 2x (0.5 to 4 mm²) solid or stranded. The contactor's typical mechanical life of 30,000,000 operations means it outlasts most machinery rebuild cycles.