800A 1000A 4P ATS Controller Dual Power Automatic Transfer Switch, 220V Control Voltage, Keyswitches Overview A heavyduty automatic transfer switch (ATS) system designed for reliable transfer between utility power and onsite generators. Available in 800A and 1000A ratings with 4pole switching and 220V control voltage. Includes keyswitches for secure manual override and transfer testing. Key benefits Reliable automatic transfer: Monitors mains and generator sources and performs smooth, timely switching to minimize downtime for critical loads. Secure manual control: Integrated keyswitches provide a controlled manual override and secure test mode to improve operational safety and conversion confidence. capacity and compatibility: Offered in 800A and 1000A ratings, 4pole configuration supports common threephase plus neutral distribution systems. Designed for use with electric and diesel generators. Simplifies maintenance and testing: Dual power control and keyswitchenabled manual mode let technicians perform safe testing without disrupting building systems. Robust performance: Engineered for frequent transfer cycles and continuous duty operation in backup power applications. Important attributes Function: Automatic transfer between primary utility and backup generator with manual keyswitch override. Ratings and models: 800A and 1000A options; 4P (fourpole) switching configuration. Control voltage: 220V control circuit for ATS operation. Compatibility: Suited for electric generator sets and diesel generators, and for threephase distribution systems requiring neutral switching. Construction and durability: Durable housing and heavyduty switching contacts built for current operation and repeated transfers. Operation modes: Automatic transfer, manual keyswitch transfer, and test modes for commissioning and maintenance. Practical applications Commercial backup power: Automatic switching for office buildings, retail centers, and apartment complexes to maintain essential services during outages. Industrial and manufacturing: Protects production lines by quickly transferring to generator power to avoid downtime and equipment interruptions. Remote infrastructure and utilities: Reliable power switching for pump stations, telecom shelters, and remote facilities that depend on generator backup. Installation and usage notes Intended to be installed by qualified electrical professionals in accordance with local codes. Verify system rating and wiring compatibility with your distribution panel and generator control circuits prior to installation. Keys provide added security and allow controlled manual operations during testing or maintenance. This ATS controller provides a practical, capacity solution for automated and manual transfer tasks in generatorbacked power systems, combining secure keyswitch control with robust 800A and 1000A switching performance.