Industrial 330NO-220AU Three-Phase AC Contactor

The Mercury Displacement (MDI) 330NO-220AU is an industrial three‑phase AC contactor with a 220V coil and a 30A rating, configured as Normally Open (NO) and 3‑Pole. It is designed to switch power to three‑phase motors and other heavy loads in control panels, providing reliable start/stop control for conveyors, pumps, and fans. With a 3‑pole arrangement, all three live lines are opened or closed together, delivering clean, synchronized switching and improved motor protection in industrial circuits. The model designation 330NO-220AU reflects its NO contact set for a 220V coil and 30A switched current, making it suitable for moderate‑power motor or line‑load control in manufacturing environments.