Switch comprising - a gas-insulated tube, - a contact system which is arranged in the tube and comprises a fixed contact and a moving contact, - a moving contact operating element which is mechanically and electrically connected to the moving contact, is routed out of the tube through an opening in said tube, and can be moved along an operating direction for the purpose of opening and closing the contact system, and - a contact-pressure spring which can be moved along the operating direction and is connected to the moving contact operating element and also to an external drive element, and is arranged in a stationary guide part of the switch, which guide part guides the moving contact operating element, - wherein, in the event of the external drive element moving along the operating direction in the direction of the fixed contact, the contact-pressure spring, the moving contact operating element and also the moving contact move in the direction of the fixed contact, the contact system is closed and the contact-pressure spring is compressed with the provision of a contact-pressure force, wherein - the contact-pressure spring is arranged in a spring housing which is rigidly connected to the moving contact operating element and can be moved relative to the stationary guide part, characterized in that - at least one guide element is fixedly attached to the outside of the spring housing, said guide element bearing against the stationary guide part and guiding the spring housing and also guiding the moving contact operating element along the operating direction, wherein - a further guide element, which guides the moving contact operating element, is arranged between the spring housing and the tube - as seen along the operating direction, wherein - a contact disk is attached to or integrally formed on the moving contact operating element between the spring housing and the tube, and - the further guide element is attached radially to the outside of the contact disk, and - the contact disk and the further guide element are electrically conductive and enable current flow from the moving contact operating element, through the contact disk and the further guide element, to the guide part - and vice versa. - a gas-insulated tube, - a contact system which is arranged in the tube and comprises a fixed contact and a moving contact, - a moving contact operating element which is mechanically and electrically connected to the moving contact, is routed out of the tube through an opening in said tube, and can be moved along an operating direction for the purpose of opening and closing the contact system, and - a contact-pressure spring which can be moved along the operating direction and is connected to the moving contact operating element and also to an external drive element, and is arranged in a stationary guide part of the switch, which guide part guides the moving contact operating element, - wherein, in the event of the external drive element moving along the operating direction in the direction of the fixed contact, the contact-pressure spring, the moving contact operating element and also the moving contact move in the direction of the fixed contact, the contact system is closed and the contact-pressure spring is compressed with the provision of a contact-pressure force, wherein - the contact-pressure spring is arranged in a spring housing which is rigidly connected to the moving contact operating element and can be moved relative to the stationary guide part, - at least one guide element is fixedly attached to the outside of the spring housing, said guide element bearing against the stationary guide part and guiding the spring housing and also guiding the moving contact operating element along the operating direction, wherein - a further guide element, which guides the moving contact operating element, is arranged between the spring housing and the tube - as seen along the operating direction, wherein - a contact disk is attached to or integrally formed on the moving contact operating element between the spring housing and the tube, and - the further guide element is attached radially to the outside of the contact disk, and - the contact disk and the further guide element are electrically conductive and enable current flow from the moving contact operating element, through the contact disk and the further guide element, to the guide part - and vice versa.