The Liebert PSA is an economical, line-interactive, uninterruptible power supply (UPS) that offers full-featured power protection for small office computers and electronic equipment. Liebert PSA offers unique features and extraordinary performance not normally found in similar products in this price range.
Liebert PSA provides up to five minutes of back-up time at full load -- more than enough time to save work in progress and shut down the connected equipment. USB shutdown software and a USB cable are also included. The UPS offers three or six battery-backed outlets, and one or two surge-only outlets. The UPS is available in 500VA, 650VA, 1000VA and 1500VA sizes, 120V and 230V models.