The ENW21543 is a fixed-mount, electrically operated coil in the Schneider Electric EasyPact NW range, designed for control applications. It pulls in on a 380/415 V AC control circuit at 50/60 Hz and is held maintained — meaning the coil stays energized continuously once the control signal is applied, not just pulsed for a close/open action.
What the control voltage means for fit
This coil is not for 24 VDC or 110 VAC control schemes — it is sized for line-voltage control circuits common in medium-voltage switchgear and large air circuit breaker applications. If your panel uses a 400 VAC control transformer, this coil drops straight in. Verify your control supply is within that range before committing the BOM line.