FIELD: electric engineering.
SUBSTANCE: instrumental block 1 contains box-shaped body 2 and contact device 4, which is utilized for collapsible connection of instrumental block 1 to immovable conducting buses. Body 2 contains walls 7,8,9 positioned at straight angle to one another with pass aperture 20 for insertion of contact device 4. for supporting contact device 4 relatively to forces of mating and detaching contact body 14 has shelves 19 positioned in two parallel rows, between which distance is present, appropriate for thickness of back wall 8 of body 2. Holding bridge 23 catches contact body 14 on remaining fourth side of perimeter and serves as position holding means. In the body 2 of instrumental block 1, cap for protecting clamps 25 is held by means of fastening lugs 28 for connecting buses of contact device 4.
EFFECT: simplified installation of contact device in instrumental block and maintenance of low load on contact body due to mating and detaching forces.
9 cl, 6 dwg
