• Blue and white arista partner authorized logo badge on arista dcs-7300-lcvr 7300 series blank line card slot cover
1 1

Arista

Arista PWR-521-DC-RED | 720XP 500W DC Power Supply, -48 to -60V, Front-to-Rear

PWR-521-DC-RED

Stock Status: Enquire

Request Quote
Sale Sold out
Shipping calculated at checkout.
20-min response

Need a quote or bulk pricing? Answered within 20 minutes, Sydney business hours.

Description

This 500 W DC hot-swappable power supply is built for the Arista 720XP 1RU campus PoE switch range. It suits DC-fed sites such as telco closets, and it works as a spare or as the second supply in a redundant pair for access switches powering video security, emergency communications and IoT devices over PoE.

The PWR-521-DC-RED runs from a -48 to -60 V DC feed, draws up to 13.3 A and operates at 88% efficiency. Input wiring is AWG #16/#14. Airflow is front-to-rear, which is the RED variant, so it must match the fan modules and airflow direction of the switch. Switches that take two supplies support N+1 redundancy, and a single supply must be fitted in power supply bay 1. With two 500 W DC supplies the typical PoE budget ranges from about 734 W on the 720XP-96ZC2 to about 883 W on the 720XP-24Y6, depending on the model.

It fits the 720XP-24Y6, 720XP-48Y6, 720XP-24ZY4, 720XP-48ZC2, 720XP-96ZC2, 720XP-48TXH-2C-S and 720XP-48TXH-2C-S-5G. It can be mixed with other 720XP supplies including PWR-621-AC, PWR-1021-AC, PWR-2021-AC and PWR-721-DC.

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

Features

- Hot-swappable, field-replaceable power supply for 720XP 1RU switches
- Supports N+1 power supply redundancy
- DC input for telco and DC-powered environments
- Lets power allocation and redundancy be tailored to PoE budget needs
- Supports Arista Dynamic PoE management, load sharing between power supplies and persistent PoE
- A single installed supply must go in power supply bay 1

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.

View full details

specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Model: PWR-521-DC-RED
- Output power: 500 W
- Input voltage: -48 to -60 V DC
- Input current: 13.3 A
- Input frequency: N/A (DC input)
- Input connector: AWG #16 / #14
- Efficiency: 88%
- Airflow: Front-to-rear (RED)
- Form factor: Field-replaceable power supply module for 720XP 1RU switches
- Maximum power supplies per switch: 2 on 24 and 48-port models, 2 or 4 on the 96-port model
- PoE available with dual 500 W DC supplies, 720XP-48Y6: 882 W typical, 857 W minimum
- PoE available with dual 500 W DC supplies, 720XP-24Y6: 883 W typical, 860 W minimum
- PoE available with dual 500 W DC supplies, 720XP-96ZC2: 734 W typical, 714 W minimum
- PoE available with dual 500 W DC supplies, 720XP-48ZC2 and 720XP-24ZY4: 809 W typical, 794 W minimum
- PoE available with dual 500 W DC supplies, 720XP-48TXH-2C-S: 782 W typical, 751 W minimum
- Switch operating temperature: 0 to 40 C
- Switch storage temperature: -40 to 70 C
- Switch relative humidity: 5 to 90%
- Switch operating altitude: 0 to 3,000 m

FAQs

Q: Which Arista switches does the PWR-521-DC-RED fit?
A: It fits the 720XP-24Y6, 720XP-48Y6, 720XP-24ZY4, 720XP-48ZC2, 720XP-96ZC2, 720XP-48TXH-2C-S and 720XP-48TXH-2C-S-5G. The 96-port, 48ZC2, 24ZY4 and 48TXH platforms require a minimum of EOS 4.23.1.

Q: Does this power supply need a licence?
A: No licence is required for the power supply itself. The host 720XP switches use EOS fixed-platform licence groups and CloudVision licence groups.

Q: What DC feed does it need?
A: It needs a -48 to -60 V DC input and draws up to 13.3 A, wired with AWG #16 or #14 cable.

Q: Can I mix it with other 720XP power supplies?
A: Yes. It can be mixed with PWR-621-AC, PWR-1021-AC, PWR-2021-AC and PWR-721-DC in the same 720XP switch.

Q: What does front-to-rear airflow (RED) mean for fan modules?
A: The RED airflow direction needs to match the fan modules fitted to the switch. The fan modules for these switches are FAN-7000-F and FAN-7000-R.

Q: How much PoE can I get with two of these supplies?
A: With two 500 W DC supplies the typical PoE budget is about 883 W on the 720XP-24Y6, 882 W on the 720XP-48Y6, 809 W on the 720XP-48ZC2 and 720XP-24ZY4, 782 W on the 720XP-48TXH-2C-S and 734 W on the 720XP-96ZC2.

Related Products

View all Switch Modules & Power Supplies

Recently Viewed

  • Request a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us