Series of surge protection devices, from lightning protection to equipment fine protection in the 230/400 V network and for photovoltaic systems. Usable according to the principles of surge protection EN 62305 in zones LPZ 1, LPZ 2, or LPZ 3. Complies with EN 61643-11, requirements for surge protection devices for use in low-voltage installations. Available as a base unit with interchangeable, factory-coded modules to prevent incorrect assembly, or as a compact device. Varistor failure indication through "red" in the viewing window. For mounting rail EN 60715 TH35.