Your Invisible Bodyguard: The Ubiquiti ETH-SP-G2 Surge Protector
Imagine the ETH-SP-G2 as the personal bodyguard for your most expensive outdoor Network devices. Its sole mission: to intercept harmful electrical discharges caused by nearby lightning or static electricity and safely dissipate them to the ground. Instead of this energy wave destroying your sensitive electronics, the ETH-SP-G2 sacrifices itself, thus protecting your investment. It is the essential first line of defense for any professional outdoor installation.
Plug & Protect: Effortless Installation for Maximum Protection
Installation couldn't be simpler. The ETH-SP-G2 is easily integrated into existing Ethernet Cabling. You connect the incoming cable to one RJ45 port and run a short patch cable from the other port to your end device. Thanks to its plug-and-play design, no software or configuration is required. Whether you want to secure your new UniFi Access Points or sensitive IP Cameras – this protection is ready in minutes and operates completely autonomously in the background.
The Foundation of Security: Why Proper Grounding is Crucial
An important note: The full protective effect of the ETH-SP-G2 is only achieved with a correctly installed grounding. Without a low-impedance path to ground, the overvoltage cannot be dissipated, and the protection is ineffective. Grounding can be done via the included screw to a grounded metal pole or via a separate grounding cable to a grounding block. Professional grounding is not an optional extra, but the absolute foundation for functional Lightning Protection.
Universally Applicable: More Than Just Protection for Ubiquiti Devices
Although the ETH-SP-G2 is perfectly tailored to the Ubiquiti ecosystem, it is by no means limited to it. It is a brand-independent hero that protects any Ethernet device up to 1 Gbit/s, whether it comes from Ubiquiti, TP-Link, MikroTik, or another manufacturer. As long as an RJ45 connector is present, you can use this surge protector to increase the longevity and reliability of your entire Network.
Strengths & Notes at a Glance
- Pro: Effectively protects expensive Network components (IP Cameras, Access Points, Ethernet Switch) from ESD and overvoltage.
- Pro: Universally compatible with Gigabit-Ethernet and PoE devices of all brands.
- Pro: Very cost-effective measure to prevent expensive failures and repairs.
- Pro: Provides an additional, redundant layer of protection even for devices with integrated protection.
- Note: The protection function is 100% dependent on correct and low-impedance grounding, which must be professionally installed.
- Note: For alternative mounting methods (e.g., with a grounding cable), additional, not included material is required.
Specifications & Features
| Manufacturer: | Ubiquiti |
| Model: | ETH-SP-G2 (Ethernet Surge Protector, Generation 2) |
| EAN: | 0817882023900 |
| Product Classification: | Ethernet Lightning Protection and Surge Protection (passive component) |
| Connectors: | (2) RJ45 Female Connectors (shielded, passive) |
| Network Compatibility: | 10/100/1000 Mbps (Gigabit Ethernet) |
| PoE Compatibility: | Supports PoE and Non-PoE devices |
| Protection Mechanism: | ESD/EMP Protection (Electrostatic Discharge / Electromagnetic Pulse) |
| Protection Technology: | Absorbs transient current at overvoltages from 100V/s to 1kV/µs |
| DC Spark-Over Voltage: | 90V @ 100V/s |
| Maximum Impulse Spark-Over Voltage: | 700V @ 1kV/µs |
| Discharge Current: | 10kA+ |
| Maximum Insulation Resistance: | 1G ohm @ 50V |
| Maximum Capacitance: | 1.0 pF @ 1 MHz |
| Chipset / OS: | Not applicable (passive, OS-independent device) |
| Power Consumption: | None |
| Housing Material: | Polycarbonate |
| Color: | White |
| Dimensions (H x W x D): | 91 x 61 x 32.5 mm |
| Weight: | 80 g |
| Operating Temperature: | -30°C to 65°C |
| Operating Humidity: | 10% to 90% (non-condensing) |
| Grounding Methods: | Self-tapping screw (incl.) for pole mounting or M5 screw (not incl.) for grounding cable |
| Certificates & Standards: | ETSI 300 019-1-4, CE, FCC Part 15 Class B, WEEE |
Scope of Delivery
| 1 x Ubiquiti ETH-SP-G2 Ethernet Surge Protector |
| 1 x Self-tapping screw |
| 1 x Serrated washer |
Frequently Asked Questions (FAQ)
Do I need the ETH-SP-G2 even if my Ubiquiti Networks device already has ESD protection?
Yes, it is highly recommended. The ETH-SP-G2 provides an additional, more robust layer of Lightning Protection. It intercepts surges before they even reach the device, thus also protecting the integrated protection mechanism of the Ubiquiti device. For critical outdoor installations, especially those involving complex Mounting Systems, this is essential redundancy.
How many ETH-SP-G2 units do I need per Ethernet Cable?
For optimal protection, Ubiquiti Networks recommends installing two units per outdoor Cabling run: one unit near the outdoor device (e.g., an IP Camera, a UniFi Access Point, or an airMAX ac Antenna) and a second unit at the building entry point, before the Ethernet Cable is connected to the internal UniFi Switch.
Does the ETH-SP-G2 work with devices from other brands?
Yes, absolutely. The ETH-SP-G2 is brand-independent and protects any Ethernet device (PoE or non-PoE) with a Network connection speed of up to 1 Gbit/s, as long as it has a standard RJ45 connector. This includes devices powered by PoE Injectors / Power Supplies.
Does the ETH-SP-G2 need to be grounded to function?
Yes, proper grounding is a fundamental requirement for its function. Without a connection to a suitable ground (e.g., a grounded mast, a grounding block, or a ground rod), the device cannot dissipate harmful overvoltage and will be ineffective in providing Lightning Protection. This is a key aspect of Ubiquiti Accessories for outdoor deployments.
Does the ETH-SP-G2 slow down my Network speed?
No. The device is designed as a passive component and is rated for Network speeds of up to 1 Gbit/s (10/100/1000 Mbps). When installed correctly with proper Cabling, it has no measurable impact on data throughput or latency for your Ethernet Switch connections.
Does the ETH-SP-G2 also protect against a direct lightning strike?
The ETH-SP-G2 is designed to protect against ESD and secondary surges, such as those caused by nearby lightning strikes. It provides crucial Lightning Protection for your Ethernet Cables. However, it is not designed to withstand a direct, high-energy lightning strike to the cable or the device itself.
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