DV1-B25/4(S) Monoblock Multi-pole Surge Protection Device (SPD) is designed to protect main distribution boards in TN-S network systems from lightning currents and transient overvoltage events. Classified as Type 1+2 (Class I+II), it delivers combined lightning current and surge protection for critical low-voltage installations.

With surge discharge ratings of 25 kA (10/350 μs) and 25 kA (8/20 μs), and protection modes L-PE / L’-PE and N-PE / N’-PE, the device ensures effective energy diversion and system safety. Built using high-energy MOV technology in a compact monoblock housing, it complies with IEC/EN 61643-11 standards.

Ideal for power plants, industrial facilities, renewable energy installations, and infrastructure projects, the DV1-B25/4(S) provides durable, long-term surge protection for mission-critical systems.