Cisco Multigigabit 802.3bt Power Injector

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Updated:June 1, 2022

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Cisco Multigigabit 802.3bt Power Injector is a standards-compliant power injector that can be used to power Cisco Catalyst access points requiring up to 50W power.

Cisco Power Injector, AIR-PWRINJ7= and mechanical dimensions

Figure 1.            

Cisco Power Injector, AIR-PWRINJ7= and mechanical dimensions

Product overview

The Cisco® Multigigabit 802.3bt Power Injector (Figure 1) is a reliable, standards-compliant power injector capable of powering the latest high-performance access points and other network devices.

One of the main limitations in designing your wireless network is the availability of power. Running power cabling is also a primary cost driver of wireless installations. The Cisco Power over Ethernet (PoE) Injector allows delivery of both data and power to a Cisco access point over a single Ethernet cable, allowing deployment of devices exactly where they are needed to provide the best wireless coverage at a much lower installation cost.

The Cisco 802.3bt PoE Injector provides fully compliant 802.3bt detection, with disconnect, short-circuit, and overload protection to ensure that only 802.3bt, 802.3at, and 802.3af devices receive power, and that non-compliant devices are not accidentally damaged. Using this injector, it is possible to power the latest generation of 802.11ax devices that require higher power as well as providing multigigabit support.

Regardless of the deployment scenario, powering Cisco devices with 802.3bt Power over Ethernet with multigigabit is a flexible and low-cost method to simplify the installation process while ensuring that network design is not compromised by power availability limitations.

Features and benefits

The Power Injector powers reliable wired network devices that provide a robust, mobile end-user experience. Table 1 lists the injectors features and benefits.

Table 1.        Features and benefits



802.3bt standard compliant support

Fully IEEE standards compliant, providing up to 50W over 100M Ethernet connection.

Up to 5 Gbps Ethernet speeds

Supports auto-negotiation Ethernet interface with data connections at 10M, 100M, 1G, 2.5G, and 5 Gbps rates.

Product specifications

Table 2 lists the specifications for the Cisco Power Injector, AIR-PWRINJ7=.

Table 2.        Specifications



Nominal Input Voltage

100 ~ 240Vac

Input Voltage Range

90 ~ 264Vac

Nominal Input Frequency

50 ~ 60Hz

Input Frequency Range

47 ~ 63Hz

Input Current

2.0A Maximum

Average Efficiency

@115Vac / 60Hz     >88% (on board)

@230Vac / 50Hz    >89% (on board)

No-Load Power Consumption

@115Vac / 60Hz    <0.21W

@230Vac / 50Hz     <0.15W

Rated Output Voltage


Output Voltage Range

54 ~ 57Vdc (on board)

Output Current

0 ~ 1.161A

Leakage Current

<250uA at 264 Vac

Insulation Resistance

DC 500V 10M ohm minimum



Overload / Overcurrent


Over Temperature


Short Circuit



Data Input 1 x 10/100/1000/2500/5000 BASE-T autosensing (RJ-45)

Data+Power Output (PoE): 1 x 10/100/1000/2500/5000 BASE-T autosensing (RJ-45)

AC power input: C14 type socket


Two Status LED indicate input power and PoE status

Dimensions (W x L x H)

(without cables): 2.6 x 5.5 x 1.5 in (65 x 140 x 38.5 mm)


0.5 lbs. (1.1 kg)



    Temperature: 14° to 104°F (–10° to 40°C)

    Humidity: 5% to 95% (noncondensing)

    Maximum altitude: 10,000 ft (3,048 m)

  Nonoperating (storage and transportation)

    Temperature: –13° to 149°F (–25° to 65°C)

    Humidity: 5% to 90% (noncondensing)

    Maximum altitude: 15,000 ft (4500 m) @ 77°F (25°C)


  IEC 61000-4-2, +/– 6kV
  IEC 61000-4-3, 3V/m, 80%am, 1kHz, 80MHz to 1GHz Criterion A
  IEC 61000-4-4. +/–1kV on input, Criterion B
  IEC 61000-4-5 (lightning surge, AC Input port), 1.2/50 μs / 8/20 μs combination wave, +/–6kV from line to line,+/–6kV line to earth, Generator impedance 2ohm; Criterion B
  EN55204 (lightning surge, RJ45 port), 10/700 μs wave +/–2kV all lines to earth
  IEC-61000-4-6 (conducted immunity), 3V, 80%AM, 1kHz, 150 kHz–80MHz; Criterion A
  CISPR 32/EN55032 Class B FCC Part 15 Class B
  Safety UL, CE, CCC, IEC/UL/EN 62368

Ordering information

Table 4 provides ordering information for the Cisco Aironet Active Sensor. To place an order, visit the Cisco Ordering Home Page. To download software, visit the Cisco Software Center.

Table 3.        Ordering information

Product name

Part number and description

Cisco 802.3bt Power Injector

  AIR-PWRINJ7= Power Injector (802.3bt), 5G mGig Ethernet

    Power cord option can be selected at time of order for AC power plug type

Cisco Services

Realize the full business value of your technology investments faster with intelligent, customized services. Cisco Services offers a comprehensive lifecycle of services for the new WLAN infrastructure innovations and associated WLAN solutions, including advisory, implementation, optimization, technical, managed, and training services. With unmatched wireless networking expertise, industry-leading best practices, and innovative automation tools and contextual data, we can help reduce overall upgrade, refresh, and migration costs as you introduce new wireless infrastructure, sensors, and software into your wireless network. Learn more.

Warranty information

The Cisco Aironet Active Sensor comes with a 90-day limited warranty that provides full warranty coverage of the hardware. The warranty includes 10-day advance hardware replacement and ensures that software media is defect-free for 90 days. For more details, visit

Find warranty information on at the Product Warranties page.

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Reference links to information about key environmental sustainability topics (mentioned in the “Environment Sustainability” section of the CSR Report) are provided in the following table:

Sustainability topic


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