• Pink Arista logo on FAN-7001C-F 1RU fan module front-to-rear airflow
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Arista

Arista PWR-400-DC-BLUE | 400W DC Power Supply, Front-to-Rear Airflow, Hot-Swap

PWR-400-DC-BLUE

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Description

This 400W DC power supply is designed for Arista 1U switches and accepts a -48V DC input (36-75V). It supports hot-swap installation and 1+1 redundancy, helping keep a switch powered in telecom and data centre deployments with DC power feeds. Front-to-rear (F2R) airflow suits racks that use front-to-rear cooling.

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

Features

- Hot-swappable power supply for in-service replacement
- 1+1 power redundancy support
- DC input for -48V DC power environments
- Front-to-rear airflow

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: 400W
- Input: -48V DC (36-75V)
- Airflow: front-to-rear (F2R)
- Hot-swappable
- Supports 1+1 redundancy
- Form factor: for 1U switches

FAQs

Q: What input voltage does this power supply use?
A: It takes a -48V DC input, with an operating range of 36-75V DC.

Q: Can it be replaced while the switch is running?
A: Yes, it is a hot-swap unit. Fitting a second supply in a 1+1 redundant configuration keeps the switch powered during replacement.

Q: Which airflow direction does it provide?
A: This is the front-to-rear (F2R) airflow version. Match the airflow direction of all power supplies and fans in the chassis.

Q: Is this an AC or DC power supply?
A: It is a DC power supply for facilities with -48V DC feeds. An AC-input model is a separate part.

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