Special lock for protective circuit breaker - has bolts which are moved longitudinally against springs by inserted key

摘要

The special lock, which is used on protective circuit breakers, has a longitudinally-moving lock-insert fitted with a series of bolts, which move transversely. The ends of the bolts engage in upper or lower locking holes (c) in the circuit breaker housing according to the direction in which the bolts are moved. The bolts are moved by springs (15) in one direction and they are moved in the other direction by the inclined edges of the key. The bolts have spring stops (h) on one side and sliding projections (d) for the key on the other. The ends of the spring stops are used as guide projections.