DV1-B25/2(S)+1 Monoblock Multi-pole Surge Protection Device (SPD) is engineered for primary surge protection in main distribution boards of low-voltage AC systems. Designed for TT and TN-S network systems, it provides coordinated protection in L-N / L’-N and N-PE modes, ensuring comprehensive coverage against lightning and switching surges.

With a high surge handling capability of 25 kA / 100 kA (10/350 μs) and 25 kA / 100 kA (8/20 μs), this SPD combines high-energy MOV and GDT (GOT) technology for fast response and long-term reliability. Its monoblock construction simplifies installation and enhances mechanical robustness.

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