Abstract: An embodiment of the invention relates to an electrical switchgear unit, in particular a high voltage switchgear unit. A housing is present, which is provided with a housing wall which contains a bore. A corrugated tube is present, which is coupled to the bore. For this purpose, the corrugated tube is plugged into the bore. Between the corrugated tube and the bore, an annular gap is located, in which an O ring is arranged, which is plugged onto the corrugated tube.

Abstract: Described is a high-voltage circuit breaker provided with two opposite-arranged arcing contacts, which are surrounded by an insulating nozzle. Furthermore provided are two main contacts, arranged opposite each other outside of the insulating nozzle, with respectively one of these contacts being assigned to one of the two arcing contacts. The high-voltage circuit breaker is provided, in at least one embodiment, with at least one device for diverting an insulating gas flow from the region between the two arcing contacts, wherein a respective insulating gas flow is conducted outside of the insulating nozzle and in the direction toward the main contacts.