Model WATSG630/4A AC33iB Size WATSG630/4AAC33iB Overview A performance automatic power switching unit designed to detect and switch power sources automatically to maintain continuous supply. Built with mechanical and electrical interlock protection, multiple protective functions, smooth contact switching, and a modular design for easy expansion and . Key benefits Continuous power availability: automatic detection and switching of incoming power sources reduce downtime and maintain supply without manual intervention. Increased operational safety: combined mechanical and electrical interlocking prevents simultaneous connection of sources and lowers the risk of short circuits. Durable, longlasting operation: stable structural design and smooth contact switching extend service life and reduce maintenance needs. Flexible integration and upgradeability: modular architecture supports a variety of functional modules for tailored configurations and improved conversion capacity. Main features Automatic detection and switching of power supply to ensure uninterrupted power continuity. Mechanical and electrical interlocking protection to avoid source short circuits. Multiple protection functions to respond to abnormal conditions. Stable design and smooth contact action for reliable, long service life. Support for a range of functional modules for expansion and . Technical and compatibility notes Model reference: WATSG630/4A AC33iB Size reference: WATSG630/4AAC33iB Designed for integration into power distribution systems and switchgear requiring automatic source selection and reliable isolation between sources. Modular compatibility allows adaptation to different control interfaces and auxiliary functions as required by the application. Typical applications Commercial buildings and residential complexes: automatic transfer between utility and backup generators to maintain lighting, elevators, and common services. Industrial facilities and manufacturing lines: protect production continuity by switching to backup power when mains fail, while preventing backfeed between sources. IT rooms and telecommunications sites: preserve critical equipment operation by providing fast, reliable source transfer and isolation. Why choose this model Delivers automated continuity of power with proven interlocking and protection mechanisms. Modular and adaptable to different operational requirements without major rework. Engineered for reliable switching and extended operational life, lowering lifecycle maintenance effort. Ordering information Refer to model WATSG630/4A AC33iB and size WATSG630/4AAC33iB when specifying equipment and when selecting compatible functional modules for .