The Schneider Electric LX1FH0422 is a replacement contactor coil from the TeSys range, designed to fit TeSys F contactors. It operates on a 42 V AC 50/60 Hz control circuit, drawing 650 VA inrush power at cos phi 0.9 and holding at 10 VA cos phi 0.3. Heat dissipation runs 8 W at 50/60 Hz. The coil has an average resistance of 0.8 Ohm inrush and 20 Ohm holding at 68 °F (20 °C). Opening time is 100...170 ms, closing time 40...65 ms. The coil has no built-in suppressor module, so you'll need to add external suppression (RC snubber or varistor) across the coil terminals if driving from a PLC output or electronic controller.
The 42 V AC control voltage is a common safety extra-low voltage (SELV) level in many industrial control schemes, often used in wet or hazardous environments where 120 V or 240 V control circuits pose a shock risk. The drop-out threshold of 0.35...0.55 Uc (14.7...23.1 V) and operational range of 0.85...1.1 Uc (35.7...46.2 V) at 131 °F (55 °C) mean the coil will reliably pick up at 42 V nominal and drop out cleanly if the control voltage sags below about 15 V. The ambient operating range is 23...131 °F (-5...55 °C). These ratings suit the coil for high-duty-cycle applications like conveyor systems or pump cycling, where the contactor may switch several times per minute.