It carries an AC-3 motor rating of 18.5 kW at 500 V and 15 kW at 400 V under AC-2 duty, which covers standard squirrel-cage motors and slip-ring motors respectively. The coil is rated for 24 V at 50 Hz, drawing 10 A at 24 V and 6 A at 230 V, with an operating range of 0.8 to 1.1 times the rated voltage at 50 Hz. These timing figures matter for coordination with upstream short-circuit protection devices — the contactor clears the arc within the let-through energy window of a typical gG fuse or motor circuit breaker.
Main circuit terminals are screw-type, accepting solid conductors from 2x 0.5 mm² up to 2x 4 mm², and stranded conductors from 2x 0.75 mm² up to 2x 25 mm². The minimum permissible cross-section at 40 °C is 16 mm² for the main circuit.
Mechanical Endurance and Switching Rates
Maximum switching rates vary by duty: 1,200 cycles per hour at AC-1 (resistive), 1,000 at AC-3 (motor running), 750 at AC-2 (slip-ring motor starting), and 250 at AC-4 (plugging/inching). For a conveyor line running at 30 starts per hour, the AC-3 rate gives decades of service life; for a reversing application at 100 cycles per hour, the AC-4 rate still leaves headroom.