The LX9FK934 is a specific contactor coil from the TeSys F range, designed to replace or service the coil in TeSys F contactors. It runs on a 284-320 V DC control circuit, low-consumption type, without a built-in suppressor module.
Opening time is 60 ms and closing time is 50 ms — that's the mechanical response you'll see from the contactor armature when this coil is energized or de-energized. Heat dissipation runs 15-18.3 W, so make sure your enclosure has enough ventilation or spacing around the contactor to shed that heat without cooking adjacent components. Inrush power is 550 VA at 20 °C, dropping to 31 VA holding. The coil operates on AC 40-400 Hz or low-consumption DC. Control voltage limits: operational range is 0.85-1.1 Uc at 55 °C, dropout at 0.3-0.5 Uc.