INTERLOCKING DEVICE

FIELD: electrical engineering; interlocking mechanisms; controlling electric circuits in stand-by power input systems. ^ SUBSTANCE: proposed mechanical circuit-breaker interlocking device has plate, bracket installed in center of plate with intermediate-size rocker-arm and two small-size ones hinged thereto, small-size rocker-arms being axle-mounted below intermediate-size one symmetrically to its fixation axis. Each rocker-arm has slits on its opposite ends with downward directed stops disposed in their bases and, consequently, in those of rocker-arms. Stops provided on opposite ends of rocker-arms are disposed at different sides of its axial line. Stops made on opposite ends of rocker-arm are likewise disposed at different sides of its axial line. Plate and bracket are provided with holes to pass stops though them and to provide their interaction with pushers and through the latter, with circuit-breaker power contacts, respectively. Intermediate-size rocker-arm stops are longer than small rocker-arms by displacement distance of respective rocker-arm fixation axes. ^ EFFECT: enlarged functional capabilities and application range of mechanical interlocking device, reduced size and simplified design of interlocking system. ^ 1 cl, 6 dwg