DV1-B25/3(S)+1 Monoblock Multi-pole Surge Protection Device (SPD) is designed to protect main distribution boards in TT and TN-S network systems from high-energy lightning and transient overvoltage events. Classified as Type 1+2 (Class I+II), it provides combined lightning current and surge protection for critical low-voltage installations.

With surge discharge capacities up to 100 kA (10/350 μs) and 100 kA (8/20 μs), and protection modes L-N / L’-N and N-PE, the device ensures efficient energy dissipation and system safety. Built with high-energy MOV and GDT technology in a compact monoblock housing, it complies with IEC/EN 61643-11 standards.

Ideal for power plants, renewable energy facilities, substations, and infrastructure projects, it delivers reliable, long-term surge protection for mission-critical systems.