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by Arista
Product Line: Arista 7000 Series
Product Type: Power supply
Original price $0.00 - Original price $668.00
Original price
$0.00 - $668.00
Current price $668.00
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-460AC-F is a 460 Watt AC power supply designed for compatibility with Arista 7124SX, 7050, and 7048-A Switches, featuring front-to-rear airflow for efficient cooling. It supports 1+1 hot-swappable power supplies and four N+1 hot-swappable fans, ensuring uninterrupted operation and system reliability. This power supply unit operates within a temperature range of 0 to 40C, accommodates an operating altitude of up to 10,000 ft, and measures 19” x 1.75” x 16” (44.5 x 4.4 x 40.64 cm), making it a versatile option for various networking infrastructures.

Key Feature for the PWR-460AC-F

  • What is the power supply specification for Arista 7124SX, 7050, and 7048-A switches?
    The spare power supply for these switches is a 460 Watt AC unit with front-to-rear airflow.
  • How many hot-swappable fans are included in the design?
    There are 4 hot-swappable fans with N+1 redundancy.
  • Can the airflow direction be reversed in these switches?
    Yes, there is an option for reversible airflow.
  • What is the typical and maximum power draw of these switches?
    The typical power draw is 125W, and the maximum is 220W.
  • Are the power supplies and fans color-coded?
    Yes, the power supply units (PSUs) and fans are color-coded, a common feature across Arista's 1RU devices.
  • Does the system support live software patching?
    Yes, live software patching is supported.
  • What is the maximum number of 10GbE ports that can be included in a link aggregation group (LAG)?
    Up to 16 10GbE ports can be included per LAG.
  • How many MAC Addresses, STP Instances, and IGMP Groups can it support?
    It supports 128,000 MAC Addresses, 64 MST/511 RPVST+ STP Instances, and 50,000 IGMP Groups.
  • What are the IPv4 and IPv6 unicast route capacities?
    IPv4 unicast routes are supported up to 16,000 and IPv6 unicast routes up to 8,000.
  • What are the operating and storage temperatures for these switches?
    The operating temperature range is 0 to 40°C, while the storage temperature range is -40°C to 70°C.

Product Review

The Arista PWR-460AC-F power supply offers high compatibility and redundancy, supporting key Arista switches like the 7124SX, 7050, and 7048-A, with 1+1 redundant hot-swappable power supplies and N+1 hot-swap fans, ensuring minimal downtime. However, its typical to maximum power draw of 125 to 220W indicates a potential for high energy consumption in demanding environments. Additionally, while the unit features advanced software capabilities like live patching and Stateful Fault Repair for enhanced network reliability and performance, its operating temperature range of 0 to 40C may limit deployment in environments with extreme temperatures.


The Arista PWR-460AC-F is a 460-watt AC power supply designed to support specific Arista switches, including the 7124SX, 7050, and 7048-A models. This power supply facilitates front-to-rear airflow, ensuring efficient cooling for high-performance networking environments. It is engineered for reliability and operational efficiency, with features that cater to the demanding needs of modern data centers. Key to its design is the capability for hot swapping, allowing both power supplies and fans to be replaced or added without interrupting switch operation. This ensures continuous uptime and serviceability, which is critical for network infrastructures requiring high availability. The PWR-460AC-F includes two hot-swappable power supplies configured for 1+1 redundancy and four hot-swap fans arranged in an N+1 redundant setup. This redundancy architecture ensures that the system remains operational even if a component fails, minimizing the risk of downtime. Another notable feature of the PWR-460AC-F is the reversible airflow option, which provides flexibility in different deployment scenarios, allowing for optimal airflow management within the rack. The typical power draw of this unit is 125W, with a maximum of 220W under full load conditions, highlighting its efficiency in energy consumption relative to its output. - Hot-swappable components include 1+1 redundant power supplies and N+1 redundant fans, ensuring uninterrupted operation. - Supports up to 16 10GbE ports per link aggregation group (LAG), enhancing connectivity and bandwidth. - Designed with color-coded power supply units (PSUs) and fans, characteristic of Arista's 1RU devices, simplifying maintenance procedures. In line with Arista's focus on software excellence, the PWR-460AC-F benefits from live software patching and a self-healing software framework featuring Stateful Fault Repair (SFR). These capabilities ensure that the system can recover from faults without impacting network performance, further enhancing the reliability of the hardware. The device supports extensive networking capabilities, including multi-chassis LAG for active/active layer 2 multipathing, and 32-way ECMP routing for efficient load balancing and redundancy. It can handle a significant number of networking parameters such as 128,000 MAC addresses, multiple spanning tree protocol (STP) instances, and thousands of access control lists (ACLs), making it suitable for complex, high-density networking environments. Environmental specifications indicate an operating temperature range of 0 to 40°C and a storage temperature range from -40°C to 70°C. The PWR-460AC-F can operate at up to 10,000 feet altitude, with a relative humidity tolerance of 5 to 95%, non-condensing. Its physical dimensions are 19 inches in width, 1.75 inches in height, and 16 inches in depth, standard for 1RU devices, ensuring compatibility with standard data center racks. In summary, the Arista PWR-460AC-F power supply is engineered to deliver reliable, efficient power for critical network hardware. Its design emphasizes redundancy, serviceability, and flexibility, making it a suitable choice for data centers seeking to minimize downtime and optimize operational efficiency.


Item Number and ManufacturerArista PWR-460AC-F
Compatible ModelsArista 7124SX, 7050, 7048-A Switches (airflow from front to rear)
Power Supply ConfigurationDual (1+1 redundancy)
Fan Quantity and Redundancy4 (N+1 redundancy)
Reversible AirflowAvailable
Energy Consumption (Typical/Maximum)125W / 220W
Redundant Power and CoolingDual hot-swappable supplies, four N+1 redundant fans
Color-CodingPower supplies and fans match Arista 1RU devices
Software UpdatesSupports live patching
Self-Repair MechanismIncorporates Stateful Fault Repair (SFR)
10GbE Ports per LAGMaximum of 16
Multi-chassis LAGSupports active/active Layer 2 multipathing
Load Balancing and Redundancy32-path ECMP routing
MAC Address Capacity128,000
STP Instances Supported64 (MST), 511 (RPVST+)
IGMP Group Limit50,000
Access Control Entries3,000
IPv4 Hosts Supported32,000
IPv4 Unicast Routes16,000
IPv4 Multicast Routes8,000
IPv6 Unicast Routes8,000
Operational Temperature Range0°C to 40°C
Storage Temperature Range-40°C to 70°C
Humidity Tolerance5% to 95% non-condensing
Maximum Operational AltitudeUp to 10,000 feet
Dimensions (Width x Height x Depth)44.5 x 4.4 x 40.64 cm

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