40A Automatic Inverter, Dual Power ATS 4P 220V 100A Multifunction Automatic Switching Switch

[Test Common and Standby Power]: Ensure both power supplies are functioning properly and switch within 50ms for uninterrupted power supply. [Reliable Backup]: Instantly activates the backup power when the general power supply fails, ensuring continuous operation and safety. [Efficient Design]: Compact size, easy maintenance and long service life make it ideal for different scenarios. [Easy Installation]: Designed for home DIN rail, compatible with pz30 distribution boxes and supports 50/60Hz power grids. [Automatic switching]: Automatically switches to ordinary power when available, minimizing disruptions and improving efficiency.