Arista PWR-745AC-R 750W AC B-F Switch PSU for 7060X, 7170, 7260X, 7280QR, 7050TX

The PWR-745AC-R is a spare 750W AC power supply for Arista 7060X, 7170 and 7280QR Series switches. Those platforms draw more power than the smaller 1RU switches that use 500W supplies, especially with many optics fitted.

Input is 100 to 240V AC, so it runs from standard 120V outlets as well as 208V and 230V circuits. Arista rates efficiency at 93% typical, Platinum level.

This version moves air back-to-front (port-side exhaust). Arista also sells the opposite airflow version, the PWR-745AC-F. Every fan module and power supply in the switch should push air the same way, matched to the rack's hot and cold aisles. Check the installed fans before fitting a new supply.

With two supplies installed, a failed unit can be replaced while the other keeps the switch running. Read the part number on the installed supply before ordering so the wattage and airflow match. Note that the PWR-745AC part numbers differ from the PWR-750AC supplies used in 7050SX-128 switches.

Arista also sells the PWR-745AC-F power supply with the opposite airflow. A new PWR-745AC-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 seller refurbished PWR-745AC-R is tested, working, and covered by the NetworkTigers one-year warranty.