Rack Power Distribution Units (PDUs) The Raritan PX family of high-quality, intelligent rack power distribution units (iPDUs) offers real-time remote power monitoring of current (amps), voltage, power (kVA, kW) and energy consumption (kWh) with +/- 1% billing-grade accuracy, even at individual outlets. The PX series offers hundreds of models to meet all your data center applications, including models with remote outlet switching, individual outlet metering, high-power for blade servers and high-density applications, and 400V power distribution.