The Schneider Electric ENW21524 is a closing coil for the EasyPact NW range of air circuit breakers. It is electrically operated with maintained control signal, drawing 4.5 W / 4.5 VA holding power. Control circuit voltage is 220/250 V DC.
The 220/250 V DC control voltage is the fit parameter — this coil is designed for DC control buses, not AC. The 4.5 W / 4.5 VA holding power is modest, so the coil does not load the control transformer heavily. As a closing coil (voltage release type), this part mounts into the EasyPact NW breaker mechanism. Fixed mounting means it's not a plug-in accessory — it bolts into the breaker chassis. The device short name XF identifies it as the closing coil variant within the MX/XF/MCH family of shunt trips and closing coils.