DC SPD protects the PV array side and must match DC voltage, while AC SPD protects inverter output or downstream AC circuits and follows AC system voltage and grid arrangement.
The two devices are not interchangeable. The side of the inverter, voltage type and earthing system decide the SPD selection.
How buyers should read this
Many PV systems use both DC SPD and AC SPD in different parts of the installation.
- DC voltage class
- AC grid voltage
- Type 1 or Type 2
- Earthing arrangement
- Enclosure location
RFQ notes
For a faster quote, send the project country, system voltage, expected quantity, required documents and any packing or label requirements with the first inquiry.