The LX1FJ350 is a replacement contactor coil from the Schneider Electric TeSys F range, designed to operate on a 350 V AC control circuit at 50/60 Hz. It is the coil-only component for a TeSys F contactor — the part that pulls the main contacts in when energized.
The 350 V AC control voltage at 50/60 Hz is the coil's operating voltage — apply that to the coil terminals and it energizes the contactor. This is not a universal coil; it will not work on a 24 V DC or 120 V AC control circuit. The 50/60 Hz designation means it handles both line frequencies, so it is fine on a 60 Hz North American panel or a 50 Hz European one, as long as the voltage matches.
This coil snaps onto the TeSys F contactor frame. Wiring the coil is straightforward — two terminals for the AC supply. No auxiliary wiring or logic connections on the coil itself.