• Arista PWR-400-DC-RED 400W DC PSU black red hot-swap fan
  • Arista PWR-400-DC-RED 400W DC PSU black red hot-swap fan
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Arista

Arista PWR-400-DC-RED | 400W DC Power Supply, -48V DC, Rear-to-Front Airflow

PWR-400-DC-RED

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Description

This 400W DC power supply is designed for 1U Arista switches and operates from a -48V DC input (36-75V range). It features rear-to-front airflow (R2F) and a hot-swappable design, and supports 1+1 redundancy when two units are installed. It suits data centre and telecom environments that run on DC power distribution.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Hot-swap capability allows replacement without powering down the switch
- 1+1 redundancy support for resilient power delivery
- Rear-to-front (R2F) airflow for hot-aisle/cold-aisle cooling alignment
- Wide -48V DC input range (36-75V) suited to telecom and DC-powered racks

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Output power: 400W
- Input: -48V DC nominal (36-75V DC range)
- Airflow: rear-to-front (R2F)
- Form factor: 1U switch power supply
- Hot-swappable design
- Supports 1+1 redundancy

FAQs

Q: What input voltage does the PWR-400-DC-RED require?
A: It operates from a -48V DC supply, with an accepted input range of 36-75V DC.

Q: Is this power supply hot-swappable?
A: Yes, it is a hot-swap design, so it can be replaced without powering down the switch.

Q: Can it be used for power redundancy?
A: Yes, it supports 1+1 redundancy when two supplies are installed in a compatible 1U switch.

Q: What airflow direction does it use?
A: It uses rear-to-front airflow (R2F). Match the airflow direction of every power supply and fan module in the chassis to keep cooling consistent.

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