412273 Legrand Přepěťová ochrana 4P T1+T2 12,5kA IP20

The Legrand 412273 is a combination surge protective device (SPD) engineered to safeguard low-voltage electrical installations against transient overvoltages caused by lightning strikes and switching events. Designed as a Type 1+2 arrester, it offers coordinated protection suitable for installation at the origin of main distribution boards and sub-feed panels. This 4-pole unit accommodates TN-S and similar supply systems with a rated voltage of 400 V AC, a lightning impulse current rating of 12.5 kA per pole, and a robust transient discharge capacity, helping to reduce the risk of damage to equipment, control systems, and sensitive electronics. It installs easily on standard 35 mm DIN rails and features a clear operational status indicator for maintenance. With an IP20 enclosure and compliance with relevant IEC SPD standards, the Legrand 412273 provides dependable surge protection for residential, commercial, and light industrial power distribution systems.