It carries an AC-2 rating of 18.5 kW at 400 V, which covers slip-ring motor duty where starting current and switching frequency are moderate — common on crane drives, hoists, and some mill auxiliaries. The coil is 24 V AC, rated at both 50 Hz and 60 Hz, with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz, so it holds in through the dips you see on a loaded line.
The 55 mm width and 112 mm height fit a standard S2 footprint; depth is 164 mm, which matters when you are laying out gland plates or enclosure depth against a backpanel.
Terminal wiring and environmental limits
Main circuit terminals are screw-type, accepting solid conductors from 2x 0.5 to 4 mm² and stranded from 2x 0.75 to 25 mm². That stranded range covers most power feeds up to 4 AWG, so you are not fighting undersized terminals on a 20 A motor circuit. The enclosure is IP20 on the front (finger-safe when panel door is closed) and IP00 at the terminals — bare metal inside the cabinet, which is normal for a panel-mounted contactor. Operating temperature range is -25 to +60 °C, storage -55 to +80 °C; the upper operating limit of 60 °C is adequate for most ventilated enclosures, but if this sits near a furnace zone or unvented cabinet, you will want to check the thermal curve for AC-3 duty cycles.