The SAPOTEC® UPS system series ZP is an online UPS (VFI UPS, EN 62040-3: Category 1) that supplies IT systems and other critical infrastructure with high-quality alternating current and switches to battery operation without interruption if required. It provides controlled power quality with continuous protection against power failures, voltage fluctuations, surges, undervoltage and overvoltage, frequency fluctuations, voltage distortions and harmonics. The ZP Series provides a reliable power supply for a wide range of applications, including Network storage (e.g. SAN - Storage Array Networks), Commercial data processing systems, IT-Networks and Server systems The device is available as tower version and has an integrated maintenance bypass.