APLAB offers a full array of rugged and military true online UPS systems to suit any industrial, or military application, including those that require compliance to military environmental and electrical standards such as IEC EN 62040-1, IEC EN 62040-3, EMC-EMI-MIL-STD-461E and more. These rugged military UPS systems are available in rack mount, freestanding or wall-mount NEMA cabinet, and custom enclosure configurations to suit applications with tight space constraints. Any standard voltage (single or three-phase) can be accommodated, in 50, 60, or 400 Hz frequencies. Most models can also act as frequency converters, changing a given input voltage and frequency to a different pure sine wave output voltage and frequency in conjunction with the usual battery back-up capabilities.