What is an uninterruptible power supply?

Read more about our editorial standards. An uninterruptible power supply, or UPS, is basically a surge protector, battery, and power inverter—which turns the battery’s stored energy into usable power—wrapped into one unit.

What is a 3-phase uninterruptible power supply (UPS)?

A 3-phase uninterruptible power supply (UPS) plays a vital role in data centers, edge computing environments, or commercial or industrial applications where uptime and data integrity are critical.

Do I need a ups if I have a power outage?

If you have a lot of important data on a desktop computer, an external hard drive, or network-attached storage, you may need a UPS to prevent your drives from losing data in the event of a sudden power outage.