3U UPS with 3 x IEC 320 C13

The minimum and maximum electrical voltage that a device can safely accept from its power source, expressed in volts (V). It indicates the acceptable supply voltage range for both alternating current (AC) and direct current (DC) inputs, ensuring compatibility with local mains or battery supplies.

The maximum electrical power that a device can deliver to its load, expressed in watts (W) or volt‑amps (VA). This value indicates the overall capacity of the unit to supply power under normal operating conditions and helps users compare performance across similar products.

The ratio of real power to apparent power in an electrical system, expressed as a unit‑less number between 0 and 1. It indicates how efficiently the device uses electricity; values close to 1 mean most supplied power is converted into useful work.