Eaton 176 → 276V ac Input Rack Mount, Stand Alone Uninterruptible Power Supply, 1500VA (1.5kW), 9PX

This uninterruptible power supply (UPS) from Eaton's 9PX series is an efficient way to ensure backup power to critical networks and servers in the event of power failure. As the first in its class to offer a unity power factor, it's able to provide a reliable and efficient electrical flow. It comes with a network card with 1500 W of power, which means it can deliver 11% more energy than other UPS units. An internal bypass allows continuous service in the event of internal faults.

• LCD (liquid crystal display) provides clear status information on a single screen
• Maintenance bypass for easy replacement of the unit without loss of power
• Highest efficiency level reduces energy and cooling consumption
• Add more runtime with up to four external hot-swappable battery modules

Unity power factor means that a piece of electrical equipment can provide the same amount of power as it consumes. This is because there's no phase difference between the current waveform (the output in watts) and the voltage waveform (measured in VA or volt-amperes). This reduces lagging, which is caused by passive electrical elements, such as capacitors, in an electrical circuit affecting the voltage waveform.