BAEREINDRETNING TIL FASTHOLDELSE AF INSTALLATIONSAPPARATER

1. A device for mechanically holding and electrically connecting installation apparatus, such as conduction circuit breakers, earth-leakage circuit breakers, fuses and the like, on or to bus bars (21) which possess an essentially plate-shaped basic body (1) of on an insulating material and which constitutes the carrier of fork-like contacts (3) which can be placed onto the bus bars (21) and are electrically connected to first ends of connecting rails (7) secured to the plate-shaped basic body (1), and at the second ends of which contacts, in the boundary region of the basic body (1), terminal points are arranged for electrical connection to the installation apparatus (25) to be held, characterised in that the plate-shaped basic body (1) and each first end of the connecting rails (7) have a respective recess (2, 8) in the region of the fork-shaped contact (3) which is assigned to this end, which recess is penetrated by two contact pieces forming the fork-shaped contact (3), that a tilting projection (5) is centrally formed on the contact pieces, which tilting projection supports the contact pieces (4) against one another, that adjacent to these tilting projections (5), on the side of the contacts (3) remote from the bus bars (21), there is arranged between the contact pieces a spring (6) which forces apart the contact pieces (4), fixes the contact pieces (4) in the recess (8) of the assigned connecting rail (7), and produces contact pressure to the bus bars (21), and that the plate-shaped basic body (1) is the carrier of at least one profile rail (13) which serves to fix the installation apparatus.