Product overview This is an automatic transfer switch controller module for generator systems, supplied in 4pole (4P) configuration and available for 400A and 630A applications. Designed for AC220V control, it provides reliable dual power switching between mains and generator to minimize downtime and ensure continuous power to critical loads. Key benefits Automatic, fast transfer: Detects utility failure and switches to generator power quickly and reliably to keep equipment running. Returns to mains when normal supply is restored. current capability: Offered in 400A and 630A 4pole versions to handle heavy loads and threephase systems with neutral. Simple integration: Controller module is built for genset and control panel installation, compatible with standard generator control circuits using AC220V control voltage. Reduced manual intervention: Automates the changeover process to reduce operator workload and risk of human error. Clear control function: Provides dedicated control logic for dual power switching, simplifying connections and commissioning. Main features and attributes Function: Dual power automatic transfer switch controller module for seamless transfer between mains and generator. Ratings: 400A and 630A options, 4pole (4P) configuration suitable for threephase plus neutral systems. Control voltage: AC220V control input for monitoring and switching commands. Compatibility: Designed as genset parts and controller module for generator sets, switchgear, and power distribution panels requiring automatic transfer functionality. Installation: Module form factor for mounting in control panels or genset cabinets; wiring terminals for power and control connections. Performance: Intended for reliable repeated switching under heavyload conditions with minimal interruption to supplied circuits. Typical applications Backup power for commercial buildings and retail sites where uninterrupted supply to critical loads is required. Industrial facilities and manufacturing plants that need automatic changeover for threephase machinery and process systems. Remote sites, telecommunications, and data centers where generator sets provide primary or standby power and automated switching avoids service interruptions. What this product solves Eliminates manual transfer delays and reduces downtime during mains interruptions. Provides a ready controller solution for integrating generators into automatic power transfer schemes. Supports heavier load requirements with appropriate currentrated 4pole options to match system demands. Ordering notes Select the appropriate current rating, 400A or 630A, and confirm 4pole configuration and AC220V control compatibility with your generator and panel wiring before installation.