FIELD: power distribution systems. SUBSTANCE: power distribution system has distribution-panel bus assembly that can be brought in contact with removable instrument units to supply users with power. Rear wall and bearing bracket of removable instrument unit form L-shaped device for displacing instruments that has rear contact system of low physical depth designed for engaging distribution-panel buses. Bearing bracket functions as guide strip jointly with stationary bearing guide. Opposite end of removable instrument unit carries locking bolt protruding downwards which is driven in guide hole provided in distribution- panel bus assembly casing. Bearing instrument panel and bracket plane opposing the latter are provided to carry instruments. EFFECT: facilitated handling of removable instrument block like handling draw-out units; reduced maintenance charges. 6 cl, 2 dwg
