The LD-MD T1 Class Surge protector Device (SPD) series have several key features, including a large discharge energy, no leakage current, no follow-up current, modular installation, high safety factor, long service life, strong environmental resistance, and a voltage protection level of less than 2500V.

This SPD is designed in accordance with both IEC and GB standards. It is specifically used for the first-level surge protection of the power supply systems and easily installed on a standard 35mm rail.

It has a high lightning current discharge capacity, with a maximum impact current of a single module can reach 50kA (10/350μs). This makes it highly effective in preventing various surges, including direct lightning strikes. It is particularly useful for first-level surge protection of power supply systems in areas with a high risk of lightning, and can be combined for use in both single-phase and three-phase power supply lines.