Skip to content


by Cisco
Product Line: Cisco Nexus 7700 Series Switches
Product Type: Switch Power Supply
Original price $0.00 - Original price $527.00
Original price
$0.00 - $527.00
Current price $527.00
Title: Used

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

Product Description

The N77-AC-3KW offers a high efficiency of more than 90%, with a maximum output of 1400 W at 110 VAC and 3000 W at 220 VAC, making it versatile for varying power supplies. It supports hot swapping and is compatible with multiple chassis including the Cisco Nexus 7700 series, requiring Cisco NX-OS Software Release 6.2 or later for 6-Slot, 10-Slot, and 18-Slot switches, and Release 7.2 or later for the 2-Slot switch. Physically, it measures 1.6 in. in height, 3.95 in. in width, and 22 in. in depth, with a weight of 5 lbs., and operates efficiently within a temperature range of 0 °C to 40 °C.

Key Feature for the N77-AC-3KW

  • What is the efficiency rating of the power supply unit?
    The efficiency of the power supply unit is more than 90%.
  • How does the maximum output power differ between 110 VAC and 220 VAC for the part number?
    At 110 VAC, the maximum output is 1400 W, while at 220 VAC, it increases to 3000 W.
  • Is hot swap support available for this device?
    Yes, hot swap support is available.
  • Which Cisco Nexus 7700 Series Switches are compatible with the part number?
    It is compatible with Cisco Nexus 7700 2-Slot (up to 2), 6-Slot (up to 4), 10-Slot (up to 8), and 18-Slot (up to 16) Switches.
  • What software versions are required for the device to operate with Cisco Nexus 7700 Series Switches?
    Cisco NX-OS Software Release 6.2 or later is required for 6-Slot, 10-Slot, and 18-Slot switches, and Release 7.2 or later for the 2-Slot switch.
  • What are the physical dimensions of this power supply unit?
    The unit measures 1.6 inches in height, 3.95 inches in width, and 22 inches in depth.
  • What is the range of input AC voltage the device can handle?
    The device can handle an input AC voltage range from 85 VAC to 264 VAC.
  • What is the input frequency range for the power supply?
    The input frequency range is 47 to 63 Hz.
  • What are the operating and non-operating temperature ranges for this power supply?
    The operating temperature range is 0 °C to 40 °C, and the non-operating (storage) temperature range is -40 °C to 85 °C.
  • How does the relative humidity affect the operation and storage of the device?
    The device operates within a relative humidity range of 10% to 90% (noncondensing) and can be stored in a relative humidity range of 10% to 95% (noncondensing).

Product Review

The Cisco N77-AC-3KW power supply unit offers high efficiency, exceeding 90%, ensuring minimal energy waste and reducing operating costs. Its compatibility with multiple Cisco Nexus 7700 series switches allows for versatile deployment options, supporting up to 16 units in the 18-slot switch configuration with hot swap support for uninterrupted operation. However, its operational temperature range is limited to 0°C to 40°C, which may restrict its use in environments with extreme temperature conditions.


The Cisco N77-AC-3KW is a power supply module designed to support the Cisco Nexus 7700 series switches. It is engineered to deliver high efficiency and reliability for enterprise-level networks. With an efficiency rating of over 90%, this power supply ensures optimal performance while minimizing power loss. This power supply has a single input and supports hot swapping, allowing for maintenance or upgrades without interrupting network operations. It is compatible with various models of the Cisco Nexus 7700 series, including the 2-slot, 6-slot, 10-slot, and 18-slot switches. The number of power supplies that can be supported varies with the chassis, from up to 2 in the 2-slot switch to up to 16 in the 18-slot switch. For software, the Cisco N77-AC-3KW requires Cisco NX-OS Software Release 6.2 or later for the 6-slot, 10-slot, and 18-slot switches and Release 7.2 or later for the 2-slot switch. This ensures that the power supply is compatible with the latest network operating systems and can support the advanced features of the Cisco Nexus 7700 series. The hardware specifications of the Cisco N77-AC-3KW include a height of 1.6 inches, a width of 3.95 inches, and a depth of 22 inches, with a weight of 5 lbs. This compact design allows for efficient use of rack space. The power supply operates within a minimum input AC voltage of 85 VAC and a maximum input AC voltage of 264 VAC. The input frequency range is between 47 to 63 Hz, and the input current can go up to 20 A at both 110 VAC and 220 VAC. It delivers a maximum output of 1400 W at 110 VAC and 3000 W at 220 VAC, ensuring sufficient power for the operation of the Nexus 7700 series switches. The output holdup time is a minimum of 20 ms, providing reliability in power delivery.
  • Efficient operation with more than 90% efficiency.
  • Supports hot swapping, enabling easy maintenance and upgrades.
  • Designed for compatibility with Cisco Nexus 7700 series switches.
The operational temperature range of the Cisco N77-AC-3KW is from 0 °C to 40 °C, and it can operate in relative humidity conditions from 10% to 90% (noncondensing). For storage, the temperature range is from -40 °C to 85 °C, with a nonoperating humidity range from 10% to 95% (noncondensing). These specifications ensure that the power supply can perform reliably in a wide range of environmental conditions. In summary, the Cisco N77-AC-3KW is a critical component for powering Cisco Nexus 7700 series switches. Its high efficiency, support for hot swapping, and compatibility with a range of chassis and software versions make it an essential part of a high-performance, reliable network infrastructure.


Part Number Cisco N77-AC-3KW
Manufacturer Cisco
Efficiency Rating Above 90%
Output Power at 110 VAC 1400 Watts
Output Power at 220 VAC 3000 Watts
Input Count One
Hot-Swappable Capability Supported
Compatible Chassis Cisco Nexus 7700 Series: 2-Slot (Max 2), 6-Slot (Max 4), 10-Slot (Max 8), 18-Slot (Max 16) Switches
Software Requirements NX-OS Release 6.2+ for 6/10/18-Slot, 7.2+ for 2-Slot Nexus 7700 Switches
Physical Height 1.6 Inches
Physical Width 3.95 Inches
Physical Depth 22 Inches
Unit Weight 5 Pounds
AC Voltage Input, Minimum 85 VAC
AC Voltage Input, Maximum 264 VAC
Input Frequency 47 - 63 Hz
Input Current Maximum 20 Amps at 110 or 220 VAC
Output Stability Time Minimum 20 ms
Operational Temperature, Minimum 0 Degrees Celsius
Operational Temperature, Maximum 40 Degrees Celsius
Operational Relative Humidity 10% to 90%, Noncondensing
Storage Temperature Range -40 °C to 85 °C
Nonoperating Humidity Range 10% to 95%, Noncondensing

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare