Model WATSN100/100/4A PC grade Overview A compact automatic transfer switch unit designed to maintain continuous power by detecting supply status and switching automatically between sources. PC grade housing provides durable insulation and mechanical protection suitable for electrical distribution and control applications. Key benefits Continuous power continuity: automatic detection and switching between power sources minimizes interruption to connected equipment and reduces downtime risk. Enhanced safety: mechanical and electrical interlocking prevents simultaneous closure of multiple sources and reduces the risk of short circuit during transfer. Reliable operation and long life: stable device design and smooth contact switching reduce contact wear and extend service life under normal operating conditions. Flexible expandability: modular functional slots support a variety of addon modules, making field and capacity upgrades straightforward. Main functions and attributes Function: automatic source detection and transfer to maintain uninterrupted power to critical loads. Protection: builtin interlock and multiple protection functions for safe switching operations. Material: PC grade enclosure for impact resistance and electrical insulation. Performance: designed for smooth contact engagement and consistent switching behavior to enhance longevity. Size designation: Watsn100/100/4apcgrade as specified for compatibility and ordering. Model: WATSN100/100/4A PC grade. Compatibility and integration Intended for integration into electrical distribution panels, generator interfaces, and control systems where automatic power transfer is required. Modular design allows compatibility with common auxiliary modules for monitoring, control, and signaling as needed by site requirements. Typical applications Emergency power systems: automatic transfer between mains and backup generator to keep lighting, control circuits, and essential equipment online during outages. Industrial control panels: protect production processes by ensuring continuous supply to control cabinets and motor drives when primary supply fluctuates or fails. Telecommunications and IT infrastructure: maintain uninterrupted power to communication equipment and network devices by switching to alternate sources automatically. Installation and maintenance Modular construction simplifies installation and future expansion. Mechanical and electrical interlock reduces risk during maintenance operations. Designed for routine inspection and module replacement without extensive system modification. The WATSN100/100/4A PC grade unit provides a practical, modular solution for automatic power transfer needs where safety, continuity, and service life are priorities.