The LX1FX042 is a replacement or spare coil for TeSys F-series contactors, rated for 42 V AC control circuits at 50/60 Hz. It is a bare coil — no built-in suppressor module — so you supply the RC snubber or varistor externally if the contactor base doesn't carry one.
Control voltage is 42 V AC 50/60 Hz. That is the coil's nominal pickup voltage; verify your control transformer secondary matches. The coil draws from the AC line, not a DC bus — if your panel runs 24 VDC control, this is the wrong coil family. That means it can cycle every six seconds continuously at elevated panel temperature — fine for most conveyor or pump cycling, but not for high-speed pick-and-place applications that exceed 600 cyc/h.