The LX4D2ND is a 60 V DC contactor coil from the Schneider Electric TeSys range. It's the magnetic coil that pulls in the contactor armature — without it, the main power contacts don't close. This is the part you swap when a coil burns open or when you're converting a panel from AC to DC control voltage.
The 60 V DC rating — what it means on the bench
60 V DC is an uncommon control voltage in most industrial plants (24 V DC and 110 V AC are the usual suspects), but it shows up in legacy European machinery and some rail/marine applications where the DC bus sits at 60 V. The coil is designed for continuous duty at that nominal voltage; it'll hold in reliably down to about 48 V DC and drop out below roughly 30 V DC, though those thresholds aren't published on this listing. If you're retrofitting a machine that runs a 60 V DC control bus, this coil meets it where it is — no need to add a DC/DC converter or rewire the cabinet for 24 V.
Deployment context
Mounts directly onto the TeSys D contactor frame (LC1D / LP1D series) — clips into the front slot, no tools needed. If you're swapping a failed coil on a live line, the contactor's auxiliary contacts and power poles stay in place; you just pop the old coil off and snap this one on.