The Schneider Electric WATSNB‑400/400 3P is a dual power transfer switch designed for switching a load between two independent AC power sources (such as utility mains and standby generator) in a three‑phase electrical system. It allows the electrical load to be transferred smoothly and safely between two supplies, ensuring continuity of service and protecting equipment. This 3‑pole version switches only the three phase conductors (without neutral) and is suitable for systems where neutral switching isn’t required. Typical installations include industrial panels, commercial power distribution boards, and backup power systems.
