Ethernet Surge Protector – SolarEdge and Enphase




  • Ethernet cable connection
  • Used on SolarEdge inverters and Enphase Envoy

The ethernet surge protector is connected to the ethernet cable of SolarEdge inverters or Enphase Envoy. The ethernet surge protector reduces faults in SolarEdge inverters or Enphase Envoy caused by electrical surges on the communication cabling.

Electrical surges can occur on the AC, DC and communication cabling connected to the inverter or DC optimisers.

Electrical surges can be caused by a variety of factors including:

  • Lightning strikes either directly or indirectly
  • Switching of electrical loads; or
  • Switching of electrical circuits on the grid; or
  • Failures on the grid such as trees falling onto power lines etc.

Surges from lightning are not simply from direct lightning strikes; lightning in the vicinity can cause surges or even lightning strikes on the power or telecommunications lines many kilometres away, can cause a surge on the solar systems cabling.

The ethernet surge protector is not designed to protect against a direct lightning strike, but rather large electrical surges resulting from lightning strikes occurring within the vicinity.

The ethernet surge protector is designed to divert electrical surges to ground when a surge is detected on the circuit.

The ethernet surge protector is designed for DIN rail mounting and can be pre-installed in the solar distribution board or be placed in line with the ethernet cable. This device is optional for Enphase system if Wi-Fi is used.

It is highly recommended to install appropriate surge protection for all PV system installations and failure to have sufficient protection can affect warranty claims or put the system at risk of irreparable damage.