Application - ETITEC class D MINI surge arresters are used for precise protection against surges (Type 3) of receivers, especially sensitive to short-term overvoltages, whose level of surge voltage withstood by their insulation does not exceed 1.5 kV. They are designed to be mounted in a network socket installation box or in a structural installation channel. The limiter has a sound signaling of damage to the layered element (the need to replace it).