The ENW21547 is a replacement coil for the EasyPact NW range of air circuit breakers and switch-disconnectors. It is electrically operated with a maintained control signal — meaning the coil stays energized as long as the control voltage is present, rather than pulsing to latch a mechanism. The control circuit is rated for 24/30 V DC, so it drops into panels with a 24 VDC control bus or a nominal 24 V battery-backed supply.
The 24/30 V DC control voltage covers both a standard 24 VDC industrial control bus and a nominal 24 V battery system that floats up to 30 V under charge. The maintained signal type means the coil draws continuous current while the breaker is closed — verify that your PLC output or control relay is rated for the coil's holding current (typically in the 100–200 mA range for this class of coil, though the exact draw is on the nameplate). Fixed mounting means the coil screws directly onto the EasyPact NW mechanism; no DIN-rail adapter or separate bracket is needed.