Insulated insert with high electric strength

An insulated insert assembly comprising an insulated insert with high electric strength for insertion into a device recess of a device housing, said insulated insert comprising a jacket housing (94) of highly insulating synthetic material, a layer packet comprised of at least two shielding plates (122, 123) of metallic material, and a printed circuit board structure (120, 121) seated between said shielding plates, and a transmission component carried by said layer packet, said layer packet together with said transmission component being designed so as to be insertable into the highly insulating jacket housing (94), characterized in that the jacket housing (94) is open only at the front side to provide a front opening, said insert having a front plate (118) carried by the layer packet (120 through 123) for closing the jacket housing at its front side, said front plate fitting tightly in its dimensions into the front opening of the jacket housing (94), said insert having a back part (119) at the back thereof, the layer packet comprising a printed circuit board structure formed of a prescribable number of printed circuit boards (120, 121) which are secured at the front side to the front plate (118) of the insert and are secured at the back to said back part (119), the two metallic shielding plates (122, 123) being connected to the front plate (118) of the insert and to the back part (119) partially by interfitting type connection and partially by a screw-type connection.