Arista PWR-D1-3041-AC-BLUE | 3kW AC Power Supply, 1RU, Hot-Swap, ATS

Q: What chassis models is this power supply compatible with?
A: The PWR-D1-3041-AC-BLUE is designed for Arista 7800R3 Series modular chassis, including the DCS-7804 and DCS-7808 models. It provides 3000W of AC power with ATS capability for redundant power inputs.

Q: What is the ATS functionality in this power supply?
A: ATS (Automatic Transfer Switch) allows the power supply to accept dual 220V AC inputs via two SAF-D-GRID 400 connectors. The PSU draws current from input A while input B remains in standby, automatically switching if the primary input fails.

Q: How many power supplies are required for a 7800 chassis?
A: The minimum number depends on the chassis model and configuration. Typical deployments use 6 PSUs for 7804 chassis and 8 PSUs for 7808 chassis for full redundancy, though minimum operational requirements may be lower.

Q: Is this power supply hot-swappable?
A: Yes, the PWR-D1-3041-AC-BLUE is a hot-plug module that can be installed or removed without powering down the chassis, enabling maintenance without network interruption.

Q: What power cords are required for this PSU?
A: This power supply requires AC power cords with SAF-D-GRID (Saf-D-Grid 400) to C20 connectors rated for 20A. Arista offers these in 1m, 2m, 3m, and 4m lengths (part numbers CAB-AC-20A-SG-C20 series).