It is the replacement coil for LX1D4 contactors in the same range, meaning if you have a LX1D4 contactor body that needs a new coil, this is the matching part — the 400 V AC version.
Applying a lower voltage may cause the contactor to drop out or chatter; a higher voltage will burn the coil. This is a single-unit package, so order one coil per contactor body.
