Model W2R Mini ATS Automatic Transfer Switch Controller Description: The W2R Mini ATS is a PCBlevel developed micro household dual power automatic transfer switch controller. It is an electrical type ATS with a 4pole design and a maximum current rating of 100A. The device automatically switches to backup power when the normal city power becomes abnormal, providing seamless transition to maintain continuity, reliability, and safety of the power supply. Key benefits: Automatic, fast transfer between city power and backup generator to avoid interruption of essential loads. Compact PCBlevel design suitable for household distribution panels and small installations. 4pole configuration supports multiwire connections in typical residential and small commercial setups. Rated for up to 100A continuous load, covering many generator and mains applications. Main features and specifications: Model: W2R Mini ATS Type: Electrical Automatic Transfer Switch (ATS) Poles: 4P (4pole) Maximum current: 100A Construction: PCBlevel micro design for compact footprint Function: Automatic detection of mains failure and immediate transfer to backup power Important operating requirements and safety note: The rated voltage of both the common (city) power supply and the backup power supply must be within the range 85% to 110% of nominal. The current supplied to the ATS coil must not be less than 5A. If current is below 5A, the coil may overheat or may spontaneously burn. If city voltage is unstable, add appropriate voltage protectors to the system to prevent coil damage and ensure reliable operation. Typical applications: Residential emergency backup: automatic transfer to a home generator during mains outages to keep essential circuits powered. Small business or workshop backup: maintain continuity for lighting, refrigeration, computing equipment, or control systems during power interruptions. Rural or offgrid properties: automatic switching between utility power and local generator sources to simplify power management. Installation and use notes: Install the ATS in accordance with local electrical codes and standard wiring practices. Confirm voltage ranges and minimum coil current before commissioning. Use appropriate breakers, fuses, and wiring sized for a 100A maximum load and the specific installation. Consider adding voltage protection if the incoming mains are prone to large fluctuations. This Mini ATS is intended for automatic, reliable transfer between city power and backup generator supplies in household and small commercial settings when used within the stated specifications and installation guidelines.