POLIM

equipment for protecting grids, systems and components used in the supply of electricity, and of electric power consumers against overloading by current and/or voltage, such as short-circuit currents as well as atmospheric overvoltages and/or switching overvoltages, in particular current limiters and surge voltage protectors for high, medium or low voltage for outdoor or indoor installation, such as surge voltage protectors with nonlinear resistors both with and without spark gaps, as well as components of the aforesaid equipment such as nonlinear resistor elements, preferably based on metal oxide