Size: Watsn100/80/4apcgrade Model: WATSN100/80/4A PC grade Overview A compact, modular automatic power transfer device with PC grade housing, designed for continuous power management in commercial and industrial installations. Combines automatic detection and switching with mechanical and electrical interlocking to support reliable operation and flexible expansion. Key benefits Continuous power availability: automatic detection and switching between power sources helps maintain power continuity for connected loads. Reduced risk of electrical faults: mechanical and electrical interlocking plus builtin protection functions minimize the chance of short circuits during transfer. Durable operation: stable mechanical design and smooth contact switching extend service life and reduce maintenance frequency. Easy and expansion: modular architecture supports multiple functional modules for tailored configurations and improved conversion rates. Main features Automatic detection and switching of power supply to respond to source changes without manual intervention. Mechanical and electrical interlocking protection to prevent simultaneous connection of multiple sources. Multiple protection functions integrated to protect switching components and connected equipment. Stable contact design for smooth switching and long operational life. Modular support for a variety of functional modules, enabling scalable and configurable setups. Housing material: PC grade, providing a durable enclosure suitable for typical indoor electrical installations. Compatibility and performance Model WATSN100/80/4A PC grade fits systems requiring automatic source transfer with modular expansion. Designed for reliable switching performance and long service intervals under normal operating conditions. Size designation Watsn100/80/4apcgrade identifies the configuration and material grade for ordering and installation. Typical applications Commercial buildings: automatic transfer between utility and backup generators to maintain lighting, elevators, and essential services during source changes. Industrial facilities: manage power switching for production lines and control systems where continuity and safe transfer are required. Telecommunications and data rooms: provide seamless source transfer for critical equipment to reduce downtime during utility interruptions. Installation and use notes Install according to local electrical codes and with appropriate circuit protection devices. Choose functional modules based on required control features and system architecture to optimize conversion rates and behavior. Regular inspection and maintenance of contacts and interlock mechanisms will help preserve long service life. This model is intended for use where automatic, secure, and modular power transfer is required and where a PC grade enclosure is preferred for the installation environment.