The Eaton 9SX and 9PX UPS is an Energy Star certified transformerless UPS system, designed to provide critical power protection and back-up for IT systems, computer rooms, storage, networks, telecoms, industrial and medical systems.  The 9Sx has a single phase input and output and 9PX models have this configuration or a three phase input and single phase output.

From the built-in front panel LCD a range of measurements are available including kWh energy consumption. Eaton 9SX uninterruptible power supplies are available in 5, 6, 8 and 11kVA sizes and with a 0.9 output power factor can deliver up to 28% more power to critical loads than traditional UPS systems within the same size range. The 9PX models run from 5-22kVA in parallel configuration for additional resilience.