Axis 02172-004 30W PoE+ Midspan Injector
The Axis 02172-004 is a compact midspan injector that delivers reliable power and data over a single Ethernet cable to network devices without built-in PoE support. If you're deploying IP cameras or other powered network equipment on cable runs beyond your switch's reach, this midspan bridges the gap by injecting power at the point of installation rather than from a central location.
Overview
The 02172-004 (often searched as 02172 004) operates as an IEEE 802.3at Type 2 Class 4 power injector, meaning it supplies up to 30W of DC power while preserving full Gigabit Ethernet data throughput. Power delivery reaches 56V DC maximum output, sufficient for PTZ cameras, heated dome enclosures, and other high-draw surveillance endpoints. Automatic PoE detection means the device only injects power when needed—idle consumption drops to just 100mW when no powered device is connected, reducing unnecessary power draw across your infrastructure.
Physical footprint is compact: 30 × 46 × 140.1 mm (roughly the size of a deck of cards) and 145 grams. This matters in practice: you can mount it on a wall, shelf, or DIN rail without occupying significant space in crowded equipment rooms or outdoor cabinets. The device handles wide input voltage (100–240V AC, 47–63Hz), so a single unit works across North American, European, and international power standards without adapters.
Key Features
- 30W PoE+ Output (56V DC): Delivers sufficient power for PTZ cameras, heated housings, and other high-current endpoints that standard PoE (13W) cannot support. This eliminates the need for separate power supplies at remote locations.
- IEEE 802.3at Type 2 Class 4 Compliance: Ensures interoperability with any standard PoE+ powered device. If a device supports PoE+ input, it will negotiate correctly with this injector.
- Automatic PoE Detection: Senses when a PoE device is connected and only activates power delivery. Reduces standby power consumption and thermal load when the injection point is idle.
- Gigabit Ethernet Support (10/100/1000 Mbps): Preserves full data rates during power injection. Data flows over Ethernet pairs 1/2 and 3/6 for standard networks, with all four pairs utilized for Gigabit operation, minimizing interference between power and data.
- Wide Temperature Operating Range: Operates at full 30W from -20°C to 40°C, and at reduced 15W from -20°C to 55°C. Useful for outdoor or unheated installations where ambient temperature varies seasonally.
- Compact, Multi-Mount Design: 145g weight and DIN-rail compatible mounting allow flexible placement in control rooms, junction boxes, or outdoor shelters without custom fabrication.
- Shielded RJ45 Connectors & C13 Power Input: Shielded connectors reduce EMI pickup in electrically noisy environments (factories, broadcast facilities). Standard C13 connector lets you use any IEC power cord already in inventory.
- LED Status Indicators: Front-panel lights show power delivery and network activity at a glance. Eliminates guesswork during commissioning or troubleshooting.
- PVC-Free, Halogen-Free Construction: Meets safety and environmental standards for deployments in hospitals, cleanrooms, or facilities with specific material restrictions.
- Global Certifications: UL 60950-1, UL 62368-1, CCC, FCC Part 15 Class A, EN 55024, EN 55032, and RCM approval. Approved for North American, European, Asian, and Oceania markets without regional variants.
Integration & Deployment
Install the 02172-004 at the end of a long Ethernet run—between your PoE switch and a remote endpoint. Connect the upstream side (from your switch) to the "In" port, and the downstream side (to your camera or device) to the "Out" port. The injector transparently passes data and adds power. No configuration required. Typical use cases include retail surveillance over extended cable runs, warehouse automation where cameras are mounted far from central equipment, and industrial sites with distributed sensor networks. Refer to IP camera selection guides to pair this injector with cameras that match your coverage and power requirements.
Power Budget & Thermal Considerations
Full-load power consumption is approximately 36W (30W delivered to the endpoint plus internal loss). In a rack or cabinet, this is manageable and will not require dedicated cooling in most environments. If you plan to chain multiple midspans or operate in a confined, unventilated space, verify adequate airflow. The device includes internal protection against overload and short circuit, but oversizing power cables and connectors is always prudent in high-current deployments.
Frequently Asked Questions
Q: Can I daisy-chain multiple Axis 02172-004 injectors?
A: No. Each injector is designed for point-of-use deployment. If you need to power multiple devices at different cable runs, use separate injectors with separate power inputs.
Q: Does the 02172-004 support PoE++ (802.3bt)?
A: No. The 02172-004 complies with IEEE 802.3at Type 2 Class 4 (PoE+). For higher power budgets beyond 30W, contact your equipment manufacturer about PoE++ alternatives.
Q: What is the maximum cable length between the switch and the injector input?
A: Standard Ethernet specifications apply: up to 100 meters (328 feet) from switch to injector. The injector can then inject power for a second 100-meter run to the endpoint, effectively extending your power delivery distance.
Q: Does the injector require a separate ground connection?
A: No. Power and data both travel over the Ethernet cable. The C13 power connector provides the ground path. Ensure your facility power is properly grounded per local electrical codes.
Q: Is the Axis 02172-004 NDAA compliant?
A: Compliance certifications listed in the datasheet cover UL, FCC, CCC, and EMC standards. NDAA Section 889 compliance is not explicitly stated in available documentation. Contact the manufacturer directly if this is a procurement requirement.
Q: Can I use this injector with non-Axis PoE+ devices?
A: Yes. The 02172-004 adheres to IEEE 802.3at Type 2, so any device with a standard PoE+ input port will work. No proprietary drivers or firmware required.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Axis 02172-004 solves a real installation problem: when you need to deploy a high-power endpoint (PTZ, heated housing, multi-sensor setup) at the end of a long cable run, your central switch's PoE budget may not extend that far. The 02172-004 injects 30W of power at the point of use, letting you install the device exactly where it needs to be rather than routing it back to your equipment room for a separate power supply.
Technical Highlights:
- 30W @ 56V DC Output: Delivers 2.3× the power of standard PoE (13W). Enough headroom for PTZ cameras with motorized zoom, heated dome enclosures rated 15–25W, and dual-sensor or panoramic camera arrays that draw more than budget PoE alone provides.
- Automatic PoE Detection: Only activates power when a PoE device is present. Idle power consumption of 100mW is negligible compared to always-on injection, so you won't waste energy waiting for installation crews to finish commissioning.
- Full Gigabit Pass-Through: Data flows uninterrupted over pairs 1/2 and 3/6 (or all four pairs for Gigabit). Power uses dedicated pair routing to prevent signal degradation. In high-RFI environments (factories, radio towers), the shielded connectors and pair separation keep analog video artifacts and digital bit errors to a minimum.
- -20°C to 40°C Full-Power Operating Range: At full 30W, the unit functions reliably in unheated outdoor shelters or seasonal cold storage. If temperature climbs above 40°C, output scales to 15W, a known limitation in hot climates. Design your deployment to account for this thermal derating in summer-exposed outdoor locations.
Deployment Considerations:
- Placement Matters: Position the injector as close as practical to the powered endpoint. The longer the cable run between injector and device, the more voltage drop accumulates. In runs exceeding 100 meters, you may see voltage sag at the endpoint. Measure actual voltage under load if you're pushing distance limits.
- Power Budget Watch: Full load is ~36W (30W output + internal loss). If you plan to rack multiple units, ensure adequate power distribution and airflow. The device has internal overload protection, but oversizing breakers and power cables is always prudent.
- Not a PoE++ Bridge: If you need power beyond 30W (some extreme PTZ units, 4K+ multi-sensor setups), the 02172-004 will not suffice. You'll need either a dedicated 802.3bt injector or a separate 48VDC PSU.
The 02172-004 is purpose-built for retail, warehouse, and mid-scale industrial surveillance where cameras and sensors are spread across distances. If your deployment mixes short- and long-run endpoints, use standard PoE for nearby devices and reserve the 02172-004 for the extended runs. You'll keep your switch power budget under control and avoid over-specifying infrastructure.
