The LX9FK927 is a specific contactor coil from the TeSys F range, designed to operate on 125 V DC or 125 V AC control circuits with low consumption characteristics. It pulls in at 0.85 to 1.1 times the rated control voltage and drops out between 0.3 and 0.5 Uc at 55 °C, so it's sized for standard TeSys F contactor frames where the coil is a separate, replaceable component.
Electrical and thermal constraints
Heat dissipation runs 15 to 18.3 W steady-state, with an inrush of 470 W at 20 °C. The hold-in power consumption is 29 W at 20 °C, and the inductance of the closed circuit is 1.7 H — that inductance matters for suppression circuit design if you're adding a varistor or RC snubber across the coil, since the coil has no built-in suppressor module. Maximum operating rate is 3600 cycles per hour at 70 °C, so it can handle fast cycling applications like conveyor indexing or press feeders without overheating the coil winding.