The ENW21815 is a Schneider Electric XF closing voltage release for EasyPact NW air circuit breakers. It's a control accessory that enables remote closing of the breaker by applying a control voltage. The part is in the EasyPact range, designed for fixed-mount NW frames in switchgear and distribution panels. Rated for a control circuit voltage of 380...480 V AC at 50/60 Hz, it operates across a threshold of 0.85 to 1.1 times the nominal voltage (Un). Once energized, the release draws a holding power of 4.5 W. The 55 ms response time is the interval from applying voltage to the closing mechanism initiating — fast enough for automated transfer schemes or remote reclosing sequences.
Integration notes for panel builders
Control wiring: the 380-480 V AC coil is not polarity-sensitive but should be fed from a dedicated control transformer or the same phase as the breaker's closing circuit. The 4.5 W holding power means a standard 5 VA control transformer has headroom for this release plus a few auxiliary relays.