Rated 18.5 kW at 500 V in AC-3 duty (motor switching), this contactor handles the typical 3-phase induction motor load profile. The AC-1 resistive rating supports 1200 operations per hour; AC-3 motor duty allows 1000 ops/h, while the more severe AC-4 (plugging/reversing) is limited to 250 ops/h. That spread tells you the thermal capacity is there for high-duty-cycle conveyor or pump applications, but you need to derate for frequent inching or reversing. Coil pickup is guaranteed at 0.8x rated voltage (19.2 VDC), dropout at 1.1x (26.4 VDC). The DC arcing time runs 20–30 ms, which is typical for DC-operated contactors and matters when coordinating with upstream semiconductor fuses or fast-acting breakers.
Main circuit terminals accept solid conductors from 2x (0.5 to 1.5 mm²) up to max 2x (0.75 to 4 mm²), and stranded conductors from 2x (0.75 to 25 mm²). The auxiliary/control circuit accepts 2x (0.75 to 16 mm²) solid or stranded.