Abstract: A plug and socket assembly (100) includes a socket (110) with a receptacle portion (113) configured to receive an electrical plug (105) and an interlock mechanism (130) configured to retain the electrical plug (105) in the receptacle portion (113) when the receptacle portion (113) is rotated about a first axis to a first position. The assembly (100) includes an electrical switch (140) including an actuator (145) operable to energize and de-energize the socket (110). The assembly (100) includes a transfer mechanism (150) having a first mechanical component (310, 410) operable to transfer the rotation of the receptacle portion (113) into motion relative to the first axis that operates the actuator (145). Methods of operating a plug and socket assembly (100) are also provided.

Abstract: A cable/line lead-in an insertion sleeve including a connection section and a contact, and a clamping part. The clamping part is detachably placeable on the connecting section of the insertion sleeve in the direction of the contact flange. The insertion sleeve and clamping part are assembled from at least two individual elements divided essentially in the axial direction. Guides are arranged along corresponding partition edges of the insertion sleeve and the clamping part are to accurately position the at least two individual elements of each insertion sleeve and clamping part. The guides interlock with one another. The cable/line lead-in is usable in regions at risk of explosion.

Abstract: A cable/line lead-in has at least one insertion sleeve and/or an intermediate connecting piece, which has a contact flange protruding radially outward at least at points. Furthermore, the cable/line lead-in has a clamping part which is detachably placeable on a connecting section of the insertion sleeve in the direction of the contact flange, wherein insertion sleeve and clamping part can be assembled from at least two individual elements divided essentially in the axial direction and guide and/or positioning means are arranged along corresponding partition edges of the individual elements for the assembly thereof accurately in position.