What is the function of an Automatic Transfer Switch (ATS)?

The function of an Automatic Transfer Switch (ATS) is to transfer power automatically between the main utility power source and backup power sources, such as generators or uninterruptible power supplies (UPS). This capability is crucial in mission-critical environments where uninterrupted power supply is essential for the operation of equipment and systems.

When the primary power source fails or if there are fluctuations that could potentially harm sensitive equipment, the ATS detects the issue and seamlessly switches to the backup source without requiring manual intervention. This ensures that essential operations continue without downtime, which is vital for industries that rely on constant power supply, such as data centers and hospitals.

The other choices pertain to different functions that do not align with the primary role of an ATS. Distributing power evenly across racks is a function of power distribution units, reducing energy consumption can involve energy management systems, and monitoring structural integrity relates to building management systems. None of these functions are performed by an ATS, which is specifically designed for automatic power transfer.