The Bridge Between Worlds: 24V Passive PoE on 802.3af Switches
Do you use proven Ubiquiti devices like airMAX ac Components that require 24V passive PoE, but your new Ethernet Switch only provides standardized 48V 802.3af PoE? The Ubiquiti INS-3AF-O-G is the ingenious and simple solution to this problem. It acts as an intelligent translator that takes the 48V voltage from the switch and provides a clean, stable 24V passive PoE supply for your end device. This way, you modernize your Network without having to replace your reliable hardware.
Central Management & Higher Efficiency for Your Network
No more countless individual PoE Injectors / Power Supplies blocking power strips. By connecting your 24V devices to a central Ethernet Switch with this converter, you gain full control. You can conveniently restart (power-cycle) connected devices via the switch's user interface, which greatly simplifies remote maintenance. In addition, 48V power transmission over long distances is significantly more efficient and less lossy than with 24V, allowing for longer Cabling runs.
Robust for Outdoors: Outdoor Design with Integrated Overvoltage Protection
The 'O' in the name stands for Outdoor – and rightly so. The INS-3AF-O-G is housed in a cylindrical, weatherproof Enclosures and features a special cable gland that reliably protects the input port from rain and moisture. But the real hero is the integrated Lightning Protection. With Ethernet isolation of ±15kV, it protects both your switch and your end device from damage caused by electrostatic discharges or nearby lightning strikes – an indispensable piece of Ubiquiti Accessories for any outdoor installation.
Gigabit Performance Without Compromises
Don't worry about your data rate. The INS-3AF-O-G is purely specialized in Power Supply and does not affect the data stream in any way. It is completely transparent for Network data and supports full Gigabit speeds (10/100/1000 Mbps). Your connection remains as fast and reliable as ever, while the Power Supply is intelligently adapted.
Strengths & Notes at a Glance
- Pro: Makes older 24V devices compatible with modern 802.3af switches.
- Pro: Enables central power management and remote restarts via the switch.
- Pro: Integrated ±15kV ESD/EMP protection secures expensive hardware.
- Pro: Weatherproof Enclosures for reliable outdoor use.
- Pro: More efficient power transmission over longer Cabling distances thanks to 48V use.
- Note: As an additional component, it represents another potential 'Point of Failure'.
- Note: The need for the adapter arises from Ubiquiti's earlier use of the proprietary 24V passive PoE standard.
Specifications & Features
| Manufacturer: | Ubiquiti |
| Model: | INS-3AF-O-G |
| EAN: | 0810354024641 |
| Product Category: | Network Accessories, PoE Converters |
| Dimensions (without cable): | Ø 30.26 x 166 mm |
| Dimensions (with cable): | Ø 30.2 x 366.6 mm |
| Weight: | 90 g |
| Housing Color: | White |
| Housing Material: | Plastic, for outdoor use |
| Weather Protection: | Yes, with cable gland and end cap |
| PoE Input (PoE In): | 1x Gigabit RJ45-Port (female) |
| PoE Output (PoE Out): | 1x permanently integrated Gigabit Ethernet Cable (male) |
| Output Cable Length: | approx. 10 cm |
| Input Voltage: | 48V, according to IEEE 802.3af Standard |
| Output Voltage: | 24V, 0.5A (passive PoE) |
| Maximum Output Power: | 12W |
| Output Pinout: | Pairs 4, 5 (+) and 7, 8 (-) |
| Ethernet Data Rates: | 10/100/1000 Mbps (Gigabit) |
| Supported Standards: | IEEE 802.3af (power consumption) |
| ESD/EMP Protection: | ± 15kV Ethernet isolation |
| Operating Temperature: | -30°C to 70°C |
| Cable Requirement: | Shielded Ethernet Cable (warranty condition) |
| Certifications: | FCC Part 15 Class A, CE, RoHS |
Scope of Delivery
| 1 x Ubiquiti INS-3AF-O-G PoE Converter, Outdoor |
Frequently Asked Questions (FAQ)
What exactly is the Ubiquiti INS-3AF-O-G needed for?
It is needed to power a Ubiquiti device that uses 24V passive PoE (like older airMAX ac Components or UniFi Access Points) from a modern PoE Switch that outputs the 48V 802.3af standard. It converts the voltage and PoE type, making it a crucial component for Network power management.
Is the INS-3AF-O-G truly weatherproof for outdoor use?
Yes, the 'O' in the name stands for 'Outdoor'. It is equipped with a special cable gland and an end cap to protect the RJ45 input connector from moisture. For maximum durability, it should be installed with the cable opening facing downwards, ensuring robust Cabling and reliable outdoor performance.
Can I use this converter with an Ethernet Switch from another brand (e.g., Cisco, Netgear)?
Yes, absolutely. As long as the Ethernet Switch supports the IEEE 802.3af PoE standard, it is compatible with the INS-3AF-O-G. The converter handles the 'translation' to the Ubiquiti Networks end device, acting as a versatile PoE Injector / Power Supply.
Does the converter slow down my Gigabit internet connection?
No. The INS-3AF-O-G is designed for Gigabit Networks (10/100/1000 Mbps) and passes data transparently. It only affects the Power Supply, not the data rate, ensuring your Cabling maintains optimal speed.
What is the difference between 802.3af PoE and passive PoE?
802.3af (active PoE) is an 'intelligent' standard. The Ethernet Switch and end device communicate ('handshake') to negotiate the required power before current flows. This protects non-PoE devices. Passive PoE always sends a fixed voltage (here 24V) over the cable without negotiation. Connecting an incompatible device can damage it. This distinction is key for proper PoE Injectors / Power Supplies usage.
Can I connect the converter incorrectly (reversed)?
No, that is physically and electrically not possible and would not work. The input (PoE In) expects 48V from the Ethernet Switch, while the output (PoE Out) delivers a fixed 24V to the end device. Reverse connection is not intended for these PoE Injectors / Power Supplies.
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