Abstract: This invention concerns a plug device with phase selection, especially as a plug connector for track lights, and the problem is addressed of making such a plug device economically, with the smallest structural dimensions, and with the lowest internal resistances. This is achieved by a contact unit consisting of a connecting contact and a contact arm, which can be deformed by torsion and/or bending to contact different internal contact tap surfaces in the device.

Abstract: This invention relates to a series terminal with one or more connection terminal units for ground conductors and with a contact base for the assembly rail, in order to use it as a ground conductor bus bar. To improve the electrical connection between the ground conductor connection terminal points and the assembly rail, and for better handling of the terminal, it is suggested that a contact clamp with a spring bow be used instead of the contact base, with the contact clamp being made in one part with the bus bar of the connection terminal points.