Cisco CRS-PM-DC enterprise networking (router/Catalyst switch/UCS families) Power Supply

The Cisco CRS-PM-DC is a DC power module for the Cisco CRS (Carrier Routing System) family, one of the field-replaceable modular power supplies that feed a CRS line card chassis or fabric chassis from a -48V DC plant, the standard power arrangement in carrier central offices and points of presence. The CRS platform runs with multiple power modules across independent power zones for full redundancy, so this module is most often ordered to restore that redundancy after a failed or removed unit rather than to commission a chassis for the first time. Confirm the exact CRS chassis variant (CRS-1, CRS-3, single-shelf or multi-shelf) before ordering, since power module compatibility differs across the CRS family. Tech-Star (UK-based, shipped worldwide) supplies Cisco carrier-routing spares to keep core routing infrastructure fully redundant.