Abstract: An electrical device includes: a first housing sub-assembly; a second housing sub-assembly that has a housing wall; and a locking device. The first housing sub-assembly and the second housing sub-assembly are positionable adjacent to one another along a plug-in direction and, when in a position in which they are adjacent to one another, are interlocked via the locking device. The locking device has an actuation element arranged on the second housing sub-assembly so as to be adjustable along an actuation direction, and a locking element connected adjustably to the housing wall and operatively connected to the actuation element. The locking element is configured, in the position of the housing sub-assemblies in which they are adjacent to one another, to interlock the first housing sub-assembly and the second housing sub-assembly, and, by moving the actuation element in the actuation direction towards the housing wall, are movable in an unblocking direction.

Abstract: A connection unit includes a plurality of connection elements arranged next to one another. Each connection element has a conductor connection opening for accommodating an electrical conductor and an actuating element for clamping the electrical conductor in the conductor connection opening and/or releasing said conductor. The actuating elements and the conductor connection openings are arranged on a common side of the connection unit. The actuating elements and the conductor connection openings of the connection elements are arranged in two rows which are spaced apart from one another. The connection unit has at least one first connection element of which the actuating element is arranged in a first row and the conductor connection opening is arranged in a second row, and at least one second connection element of which the actuating element is arranged in the second row and of which the conductor connection opening is arranged in the first row.

Abstract: A modular bus system including a support rail having a base and a longitudinal axis; at least one base module, mountable on the support rail, for electrical connection to at least one input/output functional module having a backplane printed circuit board with at least one group of at least two first electrical connectors connected thereto, for electrical connection to an electrical connector of an input/output functional module, the first electrical connectors of the group arranged one after the other along an imaginary line that extends perpendicular to the longitudinal direction of the support rail and lie in a plane in which the base of the support rail is located or which is parallel to the base; at least one input/output functional module having an electrical connector and an electronic device for communication with the modular bus system, the electrical connector of the input/output functional module configured for electrical connection to one of the electrical connectors of the base module.

Abstract: A modular bus system including a support rail having a base and a longitudinal axis; at least one base module, mountable on the support rail, for electrical connection to at least one input/output functional module having a backplane printed circuit board with at least one group of at least two first electrical connectors connected thereto, for electrical connection to an electrical connector of an input/output functional module, the first electrical connectors of the group arranged one after the other along an imaginary line that extends perpendicular to the longitudinal direction of the support rail and lie in a plane in which the base of the support rail is located or which is parallel to the base; at least one input/output functional module having an electrical connector and an electronic device for communication with the modular bus system, the electrical connector of the input/output functional module configured for electrical connection to one of the electrical connectors of the base module.