FIELD: electrical engineering. SUBSTANCE: switchgear has draw-out holders for instrument 1 which can be connected by means of break contact devices 16, 17 to collecting power buses 3 and outgoing conductors 4. Collecting buses 3 are arranged in tandem in direction of movement. Common operating mechanism that has, for example, shaft 12, gears, and toothed rack, simultaneously controls two positions of break contacts. This provides for reliable mechanical locking of holder for instrument 1 against displacement when break contact devices 16, 17 are closed. EFFECT: improved design. 4 cl, 2 dwg
