Axis 02172-012 30W Midspan PoE+ Injector
The Axis 02172-012 is a 30W midspan PoE+ injector designed for integrators deploying powered network devices (IP cameras, access points, door controllers) in locations distant from PoE-capable switch infrastructure. This wall-mounted unit consolidates power and data delivery over a single Ethernet run, eliminating the need for separate power cabling or extended PoE switch placement in constrained or retrofitted installations. The injector operates at 56VDC maximum output compliant with 802.3at PoE+ standards, making it suitable for high-draw devices that exceed standard PoE (802.3af) capacity.
Key Features
- PoE+ (802.3at) Power Delivery: 30W maximum output at 56VDC. Covers devices with power requirements up to 30W—sufficient for most thermal cameras, high-speed PTZ domes, and dual-radio access points without auxiliary power.
- Midspan Architecture: Injects power at the wall boundary, allowing single-cable runs to remote endpoints. Eliminates capex on PoE+ switch uplinks or long cable runs back to a powered switch.
- Wall-Mount Form Factor: Compact 5.52" L × 1.18" W × 1.81" H. Mounts flush to wall in comms closets, attic runs, or equipment shelves without occupying rack space.
- Pass-Through Data Path: 802.3at injectors pass Gigabit Ethernet data unmodified; no switch management overhead or learning curve for field technicians.
- Passive Design: No cooling fans, no moving parts. Field-proven reliability in unmanaged deployments; MTBF is effectively unlimited if thermal limits are observed.
- Axis Ecosystem Integration: Pairs seamlessly with Axis powered cameras and intercom systems; no third-party driver or configuration required.
- 3-Year Axis Warranty: Standard Axis manufacturer coverage; see axis.com/warranty for claims and support terms.
Midspan PoE+ injection solves a real topology problem: retrofitting powered devices in buildings where the nearest switch is too far away or unavailable. Instead of running new power conduit or deploying a powered switch at distance, you run a single Ethernet cable from the far endpoint back to this injector mounted at the boundary, then feed it standard unpowered Ethernet from your switch. The 30W envelope is the working threshold—thermal cameras, multi-sensor domes, and two-way intercoms all fall within this band. If your device draws more than 30W (rare for cameras, common for industrial heaters or PTZ motors), you'd need PoE++ or a dedicated power supply, but for 99% of video surveillance integrations, this 30W midspan handles the load.
Installation is straightforward: mount the injector to a wall or shelf, run unpowered Ethernet from your switch to the injector's input port, then run powered Ethernet from the injector's output port to the remote device. No DHCP relay, no managed configuration—data passes through transparent to your VMS. The injector works equally well in Axis Camera Station, Milestone, Genetec, or any ONVIF-compatible recorder; it's protocol-agnostic. Power consumption is load-dependent; idle draw is negligible, so 24/7 operation carries no meaningful utility cost even across a large deployment.
One practical note: 802.3at injectors are susceptible to cable-run distance on the output side. Maximum recommended run is 100 meters (CAT5e/CAT6), but voltage drop becomes measurable beyond 70 meters on long runs with high-power devices. If your endpoint is more than 100 feet away, verify cable gauge and device input tolerance before installation. The injector itself has no thermostat shutdown; it will overheat if ambient exceeds 40°C (104°F) and devices draw continuous 30W, so avoid sealed enclosures without ventilation.
This injector is Axis-manufactured (model POEA30U-1ATE) and carries full Axis warranty terms. It's the standard choice for integrators who need PoE+ injection without buying a managed injector or a new switch, and it's been in the Axis catalog for over a decade—meaning parts availability and field knowledge are not a concern. If your topology has multiple powered devices at distance from the switch, consider deploying one 02172-012 per endpoint rather than overloading a single injector with series-stacking.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed Axis midspan injectors in dozens of retrofit scenarios—parking lot cameras where the nearest powered switch is 200 feet in the wrong direction, stairwell access points in older buildings, rooftop thermal units on legacy structures. The 02172-012 solves the economics of distance. Instead of trenching new power conduit, installing a PoE+ switch in an unmanned location, or running dual cables (Ethernet + 24VAC), you run one shielded Ethernet pipe back to the closet and inject power at the boundary. The 30W limit is real and worth respecting: we've learned the hard way that a PTZ dome + heater combo at the limit of spec will thermally stress the injector in a sealed conduit over 80 meters on a 35°C summer day. But for single high-draw cameras or access points—the vast majority of our installs—the 02172-012 is bulletproof. The passive design (no fans) and Axis longevity curve mean field failure rates are extremely low. We've seen units run for 8+ years in attic mounts, roof shelters, and wall conduits without replacement.
Technical Highlights:
- 802.3at PoE+ Compliance: 30W @ 56VDC delivers sufficient power for most video cameras (12–25W), wireless APs (10–20W), and intercom endpoints (5–15W). Multi-port PoE+ switches often oversubscribe on available power; this injector guarantees dedicated 30W to a single endpoint without contention.
- Passive, Fanless Design: No cooling hardware means zero maintenance cycles, no thermal sensors to fail, and indefinite MTBF under normal operating conditions. In noisy environments (parking garages, manufacturing floors), the absence of fan noise is operationally invisible but valuable for integrator service calls.
- Transparent Data Path: The injector couples power onto the data pair via standard transformer isolation; Gigabit Ethernet passes unmodified, so you gain no latency, no bandwidth loss, and no management overhead. Plug-and-play from the network perspective.
- Compact Wall-Mount Form Factor: 5.5 inches long, <2 inches tall. Fits in shallow wall boxes, above drop ceilings, on narrow equipment shelves. Space-constrained retrofit sites (historical buildings, retrofit camera adds) benefit from the small footprint.
- Axis Ecosystem Sourcing: Factory-new genuine product sourced direct from the manufacturer or US channel partner. No grey-market, no parallel imports. Warranty claims are straightforward because the part number is unambiguous.
Deployment Considerations:
- Cable run distance on the powered (output) side should not exceed 100 meters; beyond 70 meters, measure voltage drop if the device is drawing 25W+. Use CAT6 shielded over long distances to minimize EMI and voltage sag, especially in industrial environments (RF noise, motor drives, arc welders nearby).
- Do not mount the injector in sealed metal conduit or closed boxes without ventilation. The passive design relies on ambient airflow; if ambient temperature exceeds 40°C and the device draws continuous 30W, thermal stress can shorten component life. Keep clearance around the unit or install a small exhaust fan in high-temperature spaces.
- If you have multiple powered endpoints at distance, use one 02172-012 per endpoint rather than daisy-chaining injectors or overloading a single unit. Each injector is rated for 30W sustained; doubling the load reduces reliability margins.
- Test the input Ethernet cable and the switch port before rolling the injector to site. Defective or cross-wired cables cause the injector to appear dead; a quick loopback test in the shop saves a truck roll.
- Label the powered Ethernet port clearly on installation. Field technicians sometimes unplug injector output cables thinking they're unpowered network runs; a label prevents accidental inline equipment damage and speeds future troubleshooting.
The Axis 02172-012 is the right choice for integrators handling retrofits, distance-constrained topologies, or deployments where adding a managed PoE+ switch is cost-prohibitive or logistically infeasible. It's battle-tested, carries full Axis warranty, and is sourced direct from Axis with no supply-chain ambiguity. For topology questions or multi-injector installs, consult the Axis catalog or reach out to our engineering team.
