CIRCUIT-BREAKER PROTECTIVE SHUTTER DEVICE HAVING A MAIN AND AUXILIARY SHUTTER

摘要

A circuit breaker protective apparatus including a safety shutter assembly housed in the cubicle of an electric switch-board and forming a diaphragm separating front and rear sections of the cubicle; both the partition and safety shutter comprising the shutter assembly are movable horizontally with respect to the vertical rear wall of the cubicle and the shutter is also movable vertically and parallel to the partition member; the latter is provided with ports or pass-through holes corresponding to the insulated line terminal connectors and permit access thereto; the shutter is provided to shut the ports of the partition member. Movement of the partition and shutter in a predetermined sequence is controlled by means provided on the circuit breaker carriage assembly as a result of movement of the latter into and out of the electric board cubicle.