PoE Injector

What is a PoE injector

A PoE injector connects your PoE-enabled network device to a non-PoE LAN switch port.
More specifically, a PoE injector can be used to connect a wireless access point, IP phone, network camera or any IEEE 802.3af/at-powered device (PD) to a network switch. Using a PoE injector avoids the need to run AC power lines for your wireless access point, network camera or IP phone, because you use the existing LAN cabling to deliver both DC power as well as data. 


How much power (W) can it provide?

IEEE-compliant PoE injectors are able to output anywhere from 12 watts to over 70 watts of power. 

PoE Standard PoE Common Name Power Output Comment
IEEE 802.3af PoE 15.40 W  12.95 W power available for connected device (PD)
IEEE 802.3at PoE+  30 W 25.50 W power available for connected device (PD) 
IEEE 802.3bt Type 3 4PPoE, Ultra PoE 60 W 51 W power available for connected device (PD) 
IEEE 802.3bt Type 4  Ultra PoE 100 W  71 W power available for connected device (PD) 

What kind of cable do I need?

PoE injectors are based upon the rules defined by the IEEE 802.3 working group. As such, no special cabling is required. Keep in mind, though, that Ultra-PoE connections require 8-pin network cabling. Almost all networking cabling is 8-pin, but the very cheapest cables out there may only come with 4-pins. 

PoE Standard Minimum Cable Category Pins required Supported Modes
IEEE 802.3af Category 3 4-pins / 2-pairs Mode A, Mode B
IEEE 802.3at Category 5 4-pins / 2-pairs Mode A, Mode B
IEEE 802.3bt Type 3 Category 5 8-pins / 4 pairs 4-pair
IEEE 802.3bt Type 4  Category 5 8-pins / 4 pairs 4-pair

Can I use CCA Cable?

CCA stands for Copper-Clad Aluminium. CCA cabling, also referred to as Cu/Al, utilizes an aluminium core that is coated with copper, which contrasts regular network cabling that uses 100% copper for the conductor. The cost of CCA cabling is generally lower than the cost of a network cable made from 100% copper. A lot of information (and misinformation) about the drawbacks of CCA cables can be found online, and while CCA cables usually get the job done just fine when used for standard networking applications, we do not recommend their use when using PoE injectors or switches.

Why can't I use CCA cables with PoE?

Can you use CCA network cables with PoE? Yes, you can. Should you? No.
Aluminium (or as some might say, aluminum) isn't as good an electrical conductor as copper, which is due to the higher DC-resistance value of aluminium versus copper cable. Higher resistance of CCA cable means that more power is lost and dissipated as heat, and the longer the cable connection, the worse the issue becomes.  The higher heat is a major concern, as is the larger power loss on the cable. 
So in conclusion: Play it safe and demand 100% copper network cabling from your supplier.

 


Is using a PoE Injector safe? Can it damage my equipment?

IEEE 802.3af/at/bt compliant PoE injectors are very safe. They will not damage any equipment, even if the equipment is not designed for PoE applications.  Before the PoE injector sends any power to the connected powered device (PD), such as the VoIP phone, the injector initiates a handshake procedure. That procedure utilizes low voltage and is harmless to any connected device, PoE or non-PoE. During the handshake procedure, certain key parameters are established, most of which are related to how much power is required by the connected device. Once the handshake is completed, the PoE injector begins sending power, which will trigger the connected device to start up. Should that handshake not complete successfully for any reason, the PoE injector will never send any power. It is this built-in feature of all IEEE 802.3af/at/bt-compliant devices that makes the technology so inherently safe. 

 


What are the advantages of using a PoE Injector?

PoE technology offers several benefits.
First, the delivery of data and power over a standard Ethernet cable eliminates the need for AC/DC power supplies and outlets. That lowers the cost as no electrician is required for the installation of new devices in areas where no power is present. Additionally, regular Ethernet networking cabling is rather inexpensive and is often already installed in the location.

Second, and this isn't strictly relevant to PoE injectors, with PoE technology in general, there are fewer points of failure. Connect your PoE switch to an uninterruptible power supply (UPS) and your PoE powered devices are guaranteed a constant power delivery, which is so important for mission-critical devices such as a PoE security camera.

Finally, PoE installations that utilize managed PoE switches allow you to remotely restart connected PoE devices, either manually or based on a schedule. Modern PoE switches are equipped with watchdog functionality (i.e. Powered Device Manager (PDM)) which can help to greatly reduce the downtime of your connected devices.


Product Overview

PoE Injectors
  1. 561518 (Thumbnail)
    Gigabit High-Power PoE+ Injector 1 x 30 W Port, IEEE 802.3at/af Compliant, Plastic Housing Model Number: 561518
  2. 561389 (small)
    Industrial Gigabit Ultra PoE Injector 1 x 60 W Port, IEEE 802.3bt/at/af Power over Ethernet (Ultra POE/PoE+/PoE), Metal Housing Model Number: 561389
  3. 561235 (small)
    Gigabit Ultra PoE Injector 1 x 60 W Port, IEEE 802.3at/af Compliant, Plastic Housing Model Number: 561235
  4. 561037 (small)
    Gigabit High-Power PoE+ Injector 1 x 30 W Port, IEEE 802.3at/af Compliant, Plastic Housing Model Number: 561037
  5. 560962 (small)
    Gigabit High-Power PoE+ Extender Repeater IEEE 802.3at/af Power over Ethernet (PoE+/PoE), metal Model Number: 560962
  6. 560566 (small)
    Gigabit High-Power PoE+ Injector 1 x 30 W, IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Model Number: 560566

PoE Switches
  1. 5-port-gigabit-ethernet-switch-image-1
    5-Port Gigabit Ethernet Switch Desktop Size, Plastic, IEEE 802.3az (Energy Efficient Ethernet), Black Model Number: 561501
  2. 8-port-gigabit-ethernet-switch-image-1
    8-Port Gigabit Ethernet Switch Desktop Size, Plastic, IEEE 802.3az (Energy Efficient Ethernet), Black Model Number: 561525
  3. 561471 (small)
    24-Port Gigabit Ethernet AV Switch 24 Rear-Panel 10/100/1000 RJ45 Ports, IEEE 802.3az Energy Efficient Ethernet, Desktop, 19" Rackmount Model Number: 561471
  4. 561440 (Thumbnail)
    16-Port Gigabit Ethernet PoE+ Web-Managed AV Switch with 2 SFP Uplinks 16 Rear-Panel PoE+ Ports, IEEE 802.3at Power over Ethernet (PoE+), Layer2+, Two 1 GbE SFP Open Slots, Endspan, 19" Rackmount Model Number: 561440
  5. 561457 (Thumbnail)
    24-Port Gigabit Ethernet PoE+ Web-Managed AV Switch with 2 SFP & 2 SFP/RJ45 Combo Uplinks 24 Rear-Facing PoE+ Ports, IEEE 802.3at Power over Ethernet (PoE+), Layer2+, Two 1 GbE SFP Open Slots & Two SFP/RJ45 Combo Uplink Ports, Endspan, 19" Rackmount Model Number: 561457
  6. 561433 (Thumbnail)
    8-Port Gigabit Ethernet PoE+ Web-Managed AV Switch with 2 SFP Uplinks Eight Rear-Facing PoE+ ports, IEEE 802.3at Power over Ethernet (PoE+), Layer2+, Two 1 GbE SFP Open Slots, Endspan, 19" Rackmount Model Number: 561433
  7. 16-port-gigabit-ethernet-poe-switch-with-4-rj45-gigabit-and-2-sfp-uplink-ports-image-1
    16-Port Gigabit Ethernet PoE+ Switch with 4 RJ45 Gigabit and 2 SFP Uplink Ports IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 300 W, Endspan, 19" Rackmount Model Number: 561419
  8. 8-port-gigabit-ethernet-poe-switch-with-2-rj45-gigabit-uplink-ports-image-1
    8-Port Gigabit Ethernet PoE+ Switch with 2 RJ45 Gigabit Uplink Ports IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 120 W, Endspan, Desktop Model Number: 561402
  9. 561426 (small)
    24-Port Gigabit Ethernet PoE+ Web-Managed Switch with 4 Gigabit Combo Base-T/SFP Ports IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 370 W, Endspan, 19" Rackmount Model Number: 561426
  10. 561303 (Thumbnail)
    8-Port Gigabit Ethernet PoE+ Switch with 2 RJ45 Gigabit Uplink Ports and LCD Screen LCD Display, IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 130 W, Endspan, 19" Rackmount Model Number: 561303
  11. 561327 (large)
    8-Port Gigabit Ethernet Ultra PoE Switch with 4 Uplink Ports and LCD Screen 8 x PoE ports, IEEE 802.3bt Power over Ethernet (Ultra PoE), 2 x RJ45 Uplink, 2 x SFP Uplink, 380 W, Endspan, 19" Rackmount Model Number: 561327
  12. 561280 (small)
    24-Port Gigabit Ethernet Switch with 10 GbE Uplink 24 x 10/100/1000 Mbps RJ45 Ports & 2 x 10 GbE SFP+ open slots, IEEE 802.3az (Energy Efficient Ethernet), 19" Rackmount, Metal Model Number: 561280

Product Overview

PoE Injectors
  1. 561518 (Thumbnail)
    Gigabit High-Power PoE+ Injector 1 x 30 W Port, IEEE 802.3at/af Compliant, Plastic Housing Model Number: 561518
  2. 561389 (small)
    Industrial Gigabit Ultra PoE Injector 1 x 60 W Port, IEEE 802.3bt/at/af Power over Ethernet (Ultra POE/PoE+/PoE), Metal Housing Model Number: 561389
  3. 561235 (small)
    Gigabit Ultra PoE Injector 1 x 60 W Port, IEEE 802.3at/af Compliant, Plastic Housing Model Number: 561235
  4. 561037 (small)
    Gigabit High-Power PoE+ Injector 1 x 30 W Port, IEEE 802.3at/af Compliant, Plastic Housing Model Number: 561037
  5. 560962 (small)
    Gigabit High-Power PoE+ Extender Repeater IEEE 802.3at/af Power over Ethernet (PoE+/PoE), metal Model Number: 560962
  6. 560566 (small)
    Gigabit High-Power PoE+ Injector 1 x 30 W, IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Model Number: 560566

PoE Switches
  1. 5-port-gigabit-ethernet-switch-image-1
    5-Port Gigabit Ethernet Switch Desktop Size, Plastic, IEEE 802.3az (Energy Efficient Ethernet), Black Model Number: 561501
  2. 8-port-gigabit-ethernet-switch-image-1
    8-Port Gigabit Ethernet Switch Desktop Size, Plastic, IEEE 802.3az (Energy Efficient Ethernet), Black Model Number: 561525
  3. 561471 (small)
    24-Port Gigabit Ethernet AV Switch 24 Rear-Panel 10/100/1000 RJ45 Ports, IEEE 802.3az Energy Efficient Ethernet, Desktop, 19" Rackmount Model Number: 561471
  4. 561440 (Thumbnail)
    16-Port Gigabit Ethernet PoE+ Web-Managed AV Switch with 2 SFP Uplinks 16 Rear-Panel PoE+ Ports, IEEE 802.3at Power over Ethernet (PoE+), Layer2+, Two 1 GbE SFP Open Slots, Endspan, 19" Rackmount Model Number: 561440
  5. 561457 (Thumbnail)
    24-Port Gigabit Ethernet PoE+ Web-Managed AV Switch with 2 SFP & 2 SFP/RJ45 Combo Uplinks 24 Rear-Facing PoE+ Ports, IEEE 802.3at Power over Ethernet (PoE+), Layer2+, Two 1 GbE SFP Open Slots & Two SFP/RJ45 Combo Uplink Ports, Endspan, 19" Rackmount Model Number: 561457
  6. 561433 (Thumbnail)
    8-Port Gigabit Ethernet PoE+ Web-Managed AV Switch with 2 SFP Uplinks Eight Rear-Facing PoE+ ports, IEEE 802.3at Power over Ethernet (PoE+), Layer2+, Two 1 GbE SFP Open Slots, Endspan, 19" Rackmount Model Number: 561433
  7. 16-port-gigabit-ethernet-poe-switch-with-4-rj45-gigabit-and-2-sfp-uplink-ports-image-1
    16-Port Gigabit Ethernet PoE+ Switch with 4 RJ45 Gigabit and 2 SFP Uplink Ports IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 300 W, Endspan, 19" Rackmount Model Number: 561419
  8. 8-port-gigabit-ethernet-poe-switch-with-2-rj45-gigabit-uplink-ports-image-1
    8-Port Gigabit Ethernet PoE+ Switch with 2 RJ45 Gigabit Uplink Ports IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 120 W, Endspan, Desktop Model Number: 561402
  9. 561426 (small)
    24-Port Gigabit Ethernet PoE+ Web-Managed Switch with 4 Gigabit Combo Base-T/SFP Ports IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 370 W, Endspan, 19" Rackmount Model Number: 561426
  10. 561303 (Thumbnail)
    8-Port Gigabit Ethernet PoE+ Switch with 2 RJ45 Gigabit Uplink Ports and LCD Screen LCD Display, IEEE 802.3at/af Power over Ethernet (PoE+/PoE) Compliant, 130 W, Endspan, 19" Rackmount Model Number: 561303
  11. 561327 (large)
    8-Port Gigabit Ethernet Ultra PoE Switch with 4 Uplink Ports and LCD Screen 8 x PoE ports, IEEE 802.3bt Power over Ethernet (Ultra PoE), 2 x RJ45 Uplink, 2 x SFP Uplink, 380 W, Endspan, 19" Rackmount Model Number: 561327
  12. 561280 (small)
    24-Port Gigabit Ethernet Switch with 10 GbE Uplink 24 x 10/100/1000 Mbps RJ45 Ports & 2 x 10 GbE SFP+ open slots, IEEE 802.3az (Energy Efficient Ethernet), 19" Rackmount, Metal Model Number: 561280
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