Abstract: A resin-encapsulated pole piece is provided and includes a vacuum interrupter chamber having an outer surface. A protective sheath covers the outer surface of the vacuum interrupter chamber. The protective sheath is composed of a heat-shrinkable material. The protective sheath has been pulled over the vacuum interrupter chamber and then heat shrunk so as to be in firm contact with the outer surface of the vacuum interrupter. An outer casing encapsulates the vacuum chamber covered by the protective sheath. The outer casing is composed of a cast epoxy resin and is in contact with the protective sheath.

Abstract: An exemplary switchgear assembly is disclosed with at least one moveable contact piece, in which the moveable contact is connected to a connection piece electrically with a flexible connection means. A connection between the connector strip and the connection piece of the pole part is provided. The connection can have relatively low electrical and thermal resistance. A flexible connection means is connected to the connection piece directly or with an intermediate piece, which can be connected to the connection piece, cohesively or at least unreleasably.

Abstract: The invention relates to a vacuum interrupter chamber and a method for producing the same according to the preambles of patent claims 1 and 3. In order here to improve a vacuum interrupter chamber of this type and a method for producing the same and the subsequent casting to the extent that the advantages described above are utilized but the disadvantages described are avoided, it is proposed according to the invention that, in preparation for later casting, the vacuum interrupter chamber (1) is provided on the outer surface with a protective sheath (2) consisting of an elastic or elastomeric or plastomeric material, which is applied to the surface of the vacuum interrupter chamber without further expanding mechanical aids by heat shrinkage alone.