The VW3AP0201 is an undervoltage coil for the Schneider Altivar Process ATV600 and ATV900 drive family. It's a protection accessory that trips the circuit breaker when supply voltage drops below the coil's hold-in threshold, preventing the drive from attempting to restart into a brownout or sag condition. Rated supply is 230 V.
Integration
Designed for Altivar Process drive systems rated 110 to 315 kW. The coil mounts inside the drive's standard enclosure — it's not a standalone panel component. Wiring is straightforward: 230 V supply to the coil terminals. When voltage drops below the dropout threshold, the coil releases the breaker mechanism, isolating the drive. No separate control transformer needed if the drive's control supply is already 230 V.
