NEW Arista PWR-3K-AC-R 7300X Series 3000W AC B-F Air Switch Power Supply

The PWR-3K-AC-R is a spare 3000W AC power supply for Arista 7300 Series modular chassis, the 7304 and 7308. It is the reverse-airflow version for chassis set up to exhaust air on the port side.

Input is 200 to 240V AC at 16A (20A in North America). Each supply needs a high-line circuit of that rating, so confirm PDU capacity and receptacles before installing several in one chassis.

Airflow is back-to-front (port-side exhaust). Note that output drops to 2550W in reverse airflow, so size the number of supplies for the chassis load using that lower figure rather than 3000W. The fabric modules and any fans in the chassis should move air the same direction as the supplies, matching the rack's hot and cold aisles.

Arista rates efficiency at over 93%, meeting Platinum. A spare on the shelf lets a failed supply be swapped quickly while the remaining supplies carry the load. Check the part numbers on installed supplies so the spare matches.

A seller refurbished PWR-3K-AC-R is also available.

Because the unit is hot-swappable, you can replace a failed supply in a redundant pair without powering the switch down. Install it while the other supply carries the load, then confirm both supplies show as healthy.

This PWR-3K-AC-R is new and covered by the NetworkTigers one-year warranty. The original packaging may have been opened to inspect the contents.