Emerson Liebert MPX PEM 230/400VAC 63A MPXPEM-EHBEXZ30 User Manual

The MPX PRC acts as the fundamental building block of the Liebert MPX. Power and 

Communications buses are integrated into the full length of the MPX PRC. The MPX BRM

™

 (Branch 

Receptacle Modules) and MPX PEM

™

 (Power Entry Module) lock onto the MPX PRC, adding power 

input, power output, monitoring and management, depending on the type of module.
The MPX PRC is available in two lengths:

The MPXPRC-V1880XXX will accommodate up to six standard size (266 mm) MPX BRMs (Branch 

Receptacle Modules); the MPXPRC-V1035XXX will accept up to three MPX BRMs. Each size of MPX 

PRC also accepts a single MPX PEM.
The MPX PRC has five power bus slots that allow the connection of the MPX PEM and MPX BRM 

modules to three phases of power, neutral and protective earth. A communication bus provides the 

path through which the Liebert RPC, MPX PEM and MPX BRM modules communicate. The MPX 

PRC also has a module connector slot that permits secure attachment of MPX PEM and MPX BRM 

modules via their integral connectors. Spacer covers are available to cap off unused sections of the 

MPX PRC’s surface. The spacer covers reserve positions to insert MPX BRMs for future expansion.

MPXPRC-V1880XXX

1880 (74.07)

42U

MPXPRC-V1035XXX

1035 (40.78)

23U

Risk of connecting two MPX PEMs to one MPX PRC. Can cause equipment damage, injury or 

death.
Connect only one MPX PEM (Power Entry Module) to an MPX PRC (Power Rail Chassis). 

Connecting more than one MPX PEM could cause cross-conduction. A cross-conduction can 

cause upstream overcurrent protective devices (OCPD) trip or the resulting short circuit 

current may exceed the OCPD A.I.C. ratings.