Eaton Rack Power Module (24–96A: 208Y/120V, 400Y/230V) User's Guide 164201675 Rev 2www.eaton.com/powerquality9Chapter 1 IntroductionThe Eaton® Rack Power Module (RPM-3U/3Ui) is designed to distributepower within a rack. Providing outstanding performance and reliability,the RPM-3U/3Ui's unique benefits include the following: Provides plug-and-play primary distribution from a three-phase UPS tosecondary power distribution devices. The RPM-3U/3Ui is ideal forenhancing the output distribution of UPSs such as the EatonBladeUPS®. Functions in a wide variety of applications supporting various datacenter loads at various voltages, power cord configurations, andlayouts. Can be installed in any standard 48-cm (19-inch) EIA rack or cabinet in3U applications with included hardware. Can be mounted on a wall with the optional wallmount brackets andcustomer-provided fasteners appropriate for the type of wall. Organizes power distribution and simplifies cable management,making it easier to follow the power path to the load. TheRPM-3U/3Ui also improves load balancing, reducing nuisanceoverload alarms from the UPS. Indicator LEDs that show when incoming power is available to theRPM-3U/3Ui and when an alarm is present. Columns of LEDs labeled to match the output breaker poles and theinput lines. Each column displays a reading of load status. Circuit breakers and indicator LEDs located on the front panel for easyaccess. Plug-receptacle model that is customer-installable without theservices of a licensed electrician, once the main connection to theUPS is made. Backed by worldwide agency approvals.