DV1-B25/1(S) Monoblock Single-pole Surge Protection Device (SPD) is designed for primary surge protection in main distribution boards of low-voltage AC systems. Suitable for TN-S, TN-C, and TT network systems, it provides reliable protection in L-PE and N-PE modes, safeguarding installations from lightning strikes and severe transient overvoltages.

With a high surge capability of 25 kA (10/350 μs) and 25 kA (8/20 μs), this SPD ensures effective dissipation of lightning energy using high-energy MOV technology. The monoblock housing offers mechanical robustness, simplified installation, and long service life.

Compliant with IEC/EN 61643-11 and classified as Class 1+2 / Type 1+2, the DV1-B25/1(S) is ideal for industrial plants, commercial buildings, power utilities, and critical infrastructure requiring dependable first-stage surge protection.