Circuit-breaker, has retainer provided on sides of handles for insertion of tripping device, and drivers inserted in insertion hole of release drum, where one of drivers is protruded according to type of protrusion at drum by spring force

摘要

The circuit-breaker has a retainer provided on sides of handles for selective insertion of a tripping device (1) and drivers (9, 10) inserted in an insertion hole of a release drum (7), where free ends of the driver are independently movable from each other. The drivers are subjected by spring force and pressed outwardly, where one of the drivers is lowered by displacing a driver axle in an end position and held outwardly against the spring force by an outer panel of the circuit-breaker. The other driver is protruded according to a type of protrusion at the release drum by the spring force.