It carries a 48 VDC coil and is rated for 30 kW at 500 V and 11.4 kW at 690 V, so it handles medium-to-large three-phase induction motors in that voltage band. The screw-type main terminals accept solid wire up to 2x 4 mm² or stranded up to 2x 25 mm², which covers common power wiring for this class.
The AC-3 motor-switching rating of 30 kW at 500 V tells you this contactor can start and stop a standard squirrel-cage induction motor up to that power — the most common duty cycle for conveyor, pump, and fan loads. The AC-4 rating of 41 A at 400 V covers plugging and inching applications where the motor is reversed or jogged under load, which generates higher arcing stress. Maximum switching rates are 800 cycles per hour for AC-3 and 300 for AC-4, so it's not intended for high-speed cycling like a welding gun. The 48 VDC coil pulls in with a typical operating time of 20 to 25 ms and an arcing time of 10 to 15 ms. The coil is rated for continuous duty at 0.8 to 1.1 times the rated voltage, so it holds reliably down to about 38 V and up to 53 V.
The S2 frame measures 95 mm wide, 112 mm high, and 130 mm deep — a compact footprint for a 30 kW contactor. It snaps onto standard 35 mm DIN rail per EN 50022, and the screw terminals accept solid wire from 0.5 to 4 mm² or stranded from 0.75 to 25 mm².