The system is comprised of several different products that are available separately, including a distribution cabinet, breakers, cord whips and PDUs. When in place, it extracts and distributes single-phase (120 V or 208 V) and 3-phase (120/208 V) output from 3-phase input, thanks to cabinet wiring and breaker installation. It does not generate, convert or transform power. It provides the needed connection! INPUT COMPATIBILITY: the distribution system is only for use with 120/208 V 3-Phase UPS Systems with capacities between 20 kVA and 60 kVA. It is not for single use with 80 kVA UPSs or for use with models that provide 277/480 V or 220/380 V output. Contact Tripp Lite’s UPS Applications group for additional compatibility details.