Extreme Networks PoE Injector: 75W Passive and 30W IEEE Power over Ethernet Solutions for Industrial Switches

Introducing the Extreme Networks PoE Injector family, built for reliability and performance in demanding industrial environments. The POE INJ-75W-24 is a single-port passive PoE injector capable of delivering up to 75W over CAT5 or CAT5e UTP/STP Ethernet cabling by four pairs, making it ideal for high-power endpoints on rugged factory floors or critical edge deployments. The POE INJ-30W-24 is a single-port PoE injector that adheres to IEEE 802.3at/af standards, providing a maximum of 30W to compatible devices. Together, these injectors simplify deployments, reduce clutter, and ensure your Extreme Networks industrial switches, cameras, access points, and sensors stay powered where you need them most. Both models are designed with industrial-grade robustness to withstand the rigors of modern operations while delivering consistent, dependable power over Ethernet.

• High-power, single-port flexibility: The POE INJ-75W-24 pushes up to 75W of power over a single CAT5/5e cable using all four pairs, enabling you to power power-hungry devices such as high-resolution cameras, rugged wireless access points, or multiple sensors from one compact injector. This four-pair PoE approach minimizes the need for additional inline power bricks at the device, reducing clutter and improving reliability on busy industrial networks.
• IEEE 802.3af/at compliant option: The POE INJ-30W-24 complies with IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards, delivering up to 30W of power to compatible devices. This ensures broad compatibility with a wide range of PoE-enabled equipment, while providing a safe, standards-based installation that supports future expansion and interoperability across your network ecosystem.
• Passive vs. standards-based power delivery: The 75W model is a single-port passive PoE injector, providing continuous power delivery without negotiation. The 30W model follows standard PoE practices for compatible devices, enabling reliable power delivery within the device’s PoE budget. This combination offers you a straightforward choice depending on your device lineup and deployment requirements.
• Industrial-grade design and cabling compatibility: Both injectors are engineered for rugged environments and are compatible with CAT5 or CAT5e UTP/STP cabling. This supports easy integration into existing network infrastructures while maintaining robust electrical isolation and EMI tolerance in industrial settings. The compact form factor complements tight rack spaces and wall-mount deployments on manufacturing floors or data centers.
• Simple, scalable deployment: With a single PoE output port, these injectors streamline power delivery for edge devices and lightweight access points, enabling quick rollouts, rapid replacement, and simplified maintenance. Their straightforward, plug-and-play operation reduces installation time and lowers total cost of ownership for industrial networks powered by Extreme Networks equipment.

Technical Details of Extreme Networks PoE Injector

• Power delivery: POE INJ-75W-24 (up to 75W, passive); POE INJ-30W-24 (up to 30W, IEEE 802.3af/at)
• Ports: 1 PoE output port for single-device power delivery
• Cabling: Compatible with CAT5 and CAT5e UTP/STP Ethernet cables (four-pair power delivery)
• Standards: 75W model is passive PoE; 30W model complies with IEEE 802.3af/at standards
• Applications: Ideal for powering Extreme Networks industrial switches, IP cameras, wireless access points, and other PoE-enabled devices
• Environment: Built for rugged, industrial deployments with reliable performance in challenging conditions

How to Install Extreme Networks PoE Injector

• Determine your device’s PoE requirement and select the appropriate injector model (75W passive for higher power needs or 30W IEEE-compliant for standard PoE devices).
• Connect the injector’s PoE output port to the power input of the target device using a CAT5/5e Ethernet cable. Ensure the cable is firmly seated and routed to avoid pinching or excessive bending.
• Power the injector using a compatible DC power source or supply unit appropriate for the model. Verify that the power source is properly rated for the injector’s requirements and installed in a safe, dry location.
• Route and secure all cabling away from heat sources, moisture, and vibration. If using shielded cabling (STP), follow proper grounding practices to minimize electromagnetic interference on the factory floor or data center.
• Power on the system and verify operation. Check the endpoint device for a successful link and functionality, confirming PoE delivery is active and stable. In environments with multiple devices, perform a phased rollout to monitor power stability and performance over time.

Frequently asked questions

• Q: What is the difference between the POE INJ-75W-24 and POE INJ-30W-24?

  A: The POE INJ-75W-24 is a single-port passive PoE injector delivering up to 75W over CAT5/5e, suitable for high-power devices. The POE INJ-30W-24 is IEEE 802.3af/at compliant and delivers up to 30W, designed for PoE/PoE+ devices within the standard power budget. Choose the 75W model for high-power needs and the 30W model for standard PoE deployments.

• Q: Is the 30W injector compatible with IEEE 802.3af/at devices?

  A: Yes. The POE INJ-30W-24 complies with IEEE 802.3af (PoE) and IEEE 802.3at (PoE+), ensuring compatibility with a wide range of PoE-enabled devices and enabling standard power negotiation where supported by the endpoint.

• Q: What devices can be powered with these injectors?

  A: These injectors are suitable for Extreme Networks industrial switches, IP cameras, wireless access points, sensors, and other PoE-enabled devices. The 75W model is best for power-hungry endpoints, while the 30W model is ideal for standard PoE devices within the 30W limit.

• Q: Do I need a separate power supply for the injector?

  A: Yes. Both models require a suitable DC power source or power supply appropriate for their specifications. Ensure the power source is properly rated and installed in a safe location according to installation guidelines.

• Q: How far can PoE power be delivered from the injector to the device?

  A: PoE power delivery commonly follows the IEEE PoE distance guideline of up to 100 meters (328 feet) over category cabling. For best results, keep cable runs within this distance and avoid excessive cable length or poor-quality cabling to maintain power integrity.