It operates on a 36 V DC control circuit and is specified without a built-in suppressor module, so the installer adds the appropriate flyback diode or RC snubber externally based on the PLC or relay output driving it. Opening time is 45 to 60 ms; closing time is 50 to 60 ms. The coil draws an inrush resistance of 1.23 Ω at 68 °F (20 °C) and a holding resistance of 316.5 Ω at the same temperature. Control voltage limits are 0.85 to 1.1 Uc for operation and 0.2 to 0.35 Uc for dropout at 131 °F (55 °C).
This coil mounts into TeSys FK contactor frames — the device short name LX4FK confirms the frame family. Ambient air temperature for operation is 23 to 131 °F (-5 to 55 °C). The coil is a service part (category 18401-WORLD SERVICE PARTS), meaning it is stocked as a replacement component rather than a full contactor assembly; a panel builder or MRO planner orders this to rewind an existing FK contactor rather than replace the whole unit.