It is a latching-type coil, meaning it holds the contactor closed without continuous power to the main coil — the unlatching coil (11763 Ohm at 68 °F) releases it. The latching coil measures 121.1 Ohm at 68 °F (20 °C). Operating time is 50 to 100 ms for unlatching and 40 to 75 ms for latching. Control voltage limits are 0.85 to 1.1 Uc for both latching and unlatching circuits, so the supply must stay within 353 to 456 V AC to guarantee pick-up and drop-out.
Durability and operating limits
This suits intermittent-duty applications like conveyor or pump starting where the contactor does not cycle rapidly.