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by Arista
Product Line: Arista Network Switches
Product Type: Power Supply Unit
Original price $0.00 - Original price $482.00
Original price
$0.00 - $482.00
Current price $482.00
Title: Used

Orders typically ship within 1-3 Business days, if you need an item to ship sooner please contact us.

Product Description

The PWR-1100AC-R is a 1100 Watt AC power supply designed for compatibility with Arista 7250QX-64 2RU Switches, featuring rear-to-front airflow for efficient cooling. It operates within an input voltage range of 200-240AC, with a typical input current of 6.5 - 5.5A and an input frequency of 50/60Hz. This power supply unit supports an efficiency rate of 93% Platinum, ensuring optimal performance with a typical power consumption under 14W per 40GbE port, and is designed for N+1 redundancy and hot-swappability, enhancing system reliability and ease of maintenance.

Key Feature for the PWR-1100AC-R

  • What is the input voltage range for the Arista 7250QX-64 2RU Switch's power supply?
    The input voltage range is 200-240V AC.
  • How efficient is the spare 1100 Watt AC power supply for Arista switches?
    The power supply operates with a typical efficiency of 93%, earning it a Platinum efficiency rating.
  • What type of input connector does the power supply use?
    It utilizes an IEC 320-C13 input connector.
  • Can the Arista 7250QX-64 2RU Switch support redundant power supplies?
    Yes, it supports redundant and hot-swappable power supplies for continuous operation.
  • What is the typical power consumption per 40GbE port on this device?
    The typical power consumption is under 14W per 40GbE port.
  • How does the cooling system in the Arista 7250QX-64 2RU Switch operate?
    The switch offers options for both front-to-rear and rear-to-front cooling, ensuring optimal airflow.
  • What are the operating temperature limits for the Arista 7250QX-64 2RU Switch?
    The operating temperature ranges from a minimum of 0°C to a maximum of 40°C.
  • Is the installation process for the Arista 7250QX-64 2RU Switch's power supply complicated?
    No, the power supply features tool-less rails for simple installation.
  • What is the maximum operating altitude for the Arista 7250QX-64 2RU Switch?
    It can operate at altitudes up to 10,000 feet (0-3,000m).
  • How many ECMP groups can the Arista 7250QX-64 2RU Switch support?
    It supports 64-way ECMP with up to 1,000 groups.

Product Review

The Arista PWR-1100AC-R power supply offers high efficiency, with a rating of 93% Platinum, ensuring minimal energy waste and cost savings for Arista 7250QX-64 switches. However, its input voltage requirement of 200-240AC may limit its compatibility in regions with lower standard voltage supplies. It supports redundant and hot-swappable power options, enhancing system reliability and minimizing downtime during maintenance.


The Arista PWR-1100AC-R is a 1100 Watt AC power supply designed specifically for Arista 7250QX-64 2RU Switches, ensuring compatibility and optimal performance for these devices. This power supply supports a rear-to-front airflow configuration, aligning with the cooling requirements of the targeted switch models. It operates on an input voltage range of 200-240AC, with a typical input current range of 6.5 to 5.5A, accommodating the varying standards of power sources across different regions. The unit is designed to function efficiently within a frequency range of 50/60Hz, facilitated by an IEC 320-C13 input connector. One of the key features of the PWR-1100AC-R is its high efficiency, typically around 93%, earning it a Platinum efficiency rating. This high level of efficiency is not only beneficial for reducing operational costs but also for minimizing heat generation within the network environment. The power supply is capable of delivering typical power under 14W per 40GbE port, showcasing its capacity to support high-density networking without compromising on power efficiency. Additionally, the power supply is designed with operational redundancy and flexibility in mind: - Over 93% efficient power supplies ensure minimal energy wastage and improved operational cost-efficiency. - Redundant & hot-swappable power capabilities allow for uninterrupted network operation, even during maintenance or in the event of a power supply failure. - N+1 redundant & hot-swappable fans, coupled with the option for front-to-rear or rear-to-front cooling, provide adaptable thermal management to match the installation environment. The Arista PWR-1100AC-R also emphasizes ease of installation and maintenance, featuring tool-less rails that simplify the process of integrating the power supply into a network setup. It supports a broad range of network protocols and features, including 64 STP Instances for MST and up to 510 for RPVST+, as well as IGMP groups up to 288K with 8K unique groups. The device is capable of handling ACLs ranging from 4K to 16K and Egress ACLs from 1K to 4K, with ECMP support for 64-way, 1K groups, ensuring versatile and secure network configuration options. From an operational standpoint, the PWR-1100AC-R is designed to function within a broad range of environmental conditions. It operates efficiently within a temperature range of 0°C to 40°C and can be stored in temperatures ranging from -40°C to 70°C. The unit is engineered to withstand relative humidity levels from 5% to 95%, without condensation, and can operate at altitudes up to 10,000 ft (0-3,000m), accommodating various installation environments from data centers to elevated remote sites. In summary, the Arista PWR-1100AC-R is a highly efficient, versatile, and reliable power supply solution for Arista 7250QX-64 2RU Switches, offering features that ensure seamless integration, robust performance, and adaptability to diverse operational requirements and environments.


Item NumberArista PWR-1100AC-R
ManufacturerArista Networks
Description1100W AC replacement power unit for Arista 7250QX-64 2RU models with airflow from the rear to the front
AC Input Range200V to 240V AC
Average Input Amperage5.5A to 6.5A depending on load
Frequency of Input50Hz/60Hz
Power Input InterfaceIEC 320-C13 connector type
Efficiency Rating93%, classified as Platinum
Power Consumption per 40GbE PortLess than 14W
Efficiency LevelHigher than 93%
Power System FeaturesRedundancy and hot-swap capability
Fan RedundancyN+1, hot-swappable
Cooling DirectionConfigurable for either front-to-rear or rear-to-front
InstallationTool-less mounting rails
Maximum STP Instances64 for MST, 510 for RPVST+
IGMP Group CapacitySupports up to 288,000 groups, with 8,000 being unique
Range of ACLsFrom 4,000 to 16,000 entries
Outgoing ACL Range1,000 to 4,000 entries
ECMP PathsUp to 64 per 1,000 groups
Minimum Operating Temperature0 degrees Celsius
Maximum Operating Temperature40 degrees Celsius
Minimum Storage Temperature-40 degrees Celsius
Maximum Storage Temperature70 degrees Celsius
Operational Humidity Range5% to 95% non-condensing
Usage Altitude MaximumUp to 10,000 feet (0 to 3,000 meters)

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