Dual power transfer switch WATSN100/63/4A PC grade Key benefits Continuous power: automatic detection and switching between two power sources to minimize downtime and maintain uninterrupted supply. Safe operation: mechanical and electrical interlocking prevents simultaneous source connection and reduces risk of short circuit; builtin protection functions support reliable switching. Long service life: stable design and smooth contact switching reduce wear and extend operational life. Flexible and expandable: modular design accepts a range of functional modules for and future upgrades. Main features Model and size: WATSN100/63/4A, PC grade. Function: automatic dual power transfer for switching between primary and secondary sources. Protection: combined mechanical and electrical interlock plus multiple protection functions to safeguard circuits during changeover. Durability: engineered for smooth contact engagement and stable mechanical operation to support switching cycles. Modularity: supports different functional modules to adapt to control, monitoring, or interlock requirements. Why you need it Ensures power continuity for critical loads by switching automatically when the main supply fails. Reduces manual intervention and human error by performing reliable automatic transfer and interlock control. Provides a compact, modular solution that can be adapted to evolving electrical system needs. Compatibility and performance Intended for integration into low voltage power distribution systems and control panels where automatic source transfer is required. Designed for reliable operation under repeated switching cycles and typical industrial or commercial load conditions. PC grade construction as specified in the model designation. Typical applications Backup generator transfer in small commercial buildings and offices to maintain lighting, communications, and computing equipment during outages. Power source management for small server rooms and network closets to protect equipment during main supply interruptions. Distribution panels in light industrial or manufacturing facilities that require automatic changeover between grid supply and alternate sources. Technical reminder Product designation: WATSN100/63/4A PC grade. Confirm that the model rating and module selections meet your system voltage, current, and control requirements before installation. This description reflects the model, core functions, and features as specified for WATSN100/63/4A PC grade without adding unspecified details.