The SUP1-C series surge protectors are suitable for power supply systems of AC 50/60Hz and 230/400V or below, including TT, IT, TN-S, and TN-C-S systems. They can serve as equipotential connections during lightning strikes, and their design complies with the requirements of IEC 61643-31, GB18802.1, and GB50057.

Primarily used for protecting low-voltage electrical appliances from surge currents caused by atmospheric discharge or overvoltage, this unit is equipped with heavy-duty zinc oxide varistors as a single-voltage limiting device.