Cisco WS-CAC2500-DC enterprise networking (router/Catalyst switch/UCS families) Datacentre Switch

The Cisco WS-CAC2500-DC is a 2500W DC power supply for the Catalyst 6000/6500 chassis family, feeding the switch from a -48V DC plant rather than AC mains, the standard arrangement in carrier central offices and telco-grade cabinets. Catalyst 6500 chassis of this era typically run dual power supplies for N+1 redundancy across their supervisor and line cards, so this unit is most often ordered to restore that redundancy after a failed or removed supply. Confirm your specific 6500 chassis model and total power draw before ordering, since larger chassis configurations with multiple high-density line cards may need more than one 2500W supply to stay within N+1 protection. Tech-Star (UK-based, shipped worldwide) supplies Cisco Catalyst 6500 power supplies to keep DC-powered chassis fully redundant.