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What is a dashpot?


When the circuit breaker opens and closes it is traveling at a very high velocity. It then must slow down very quickly without damaging the interrupter. This is accomplished by using a dashpot which absorbs some of the energy to slow down the interrupter towards the end of its travel. Dashpots are commonly applied on the opening side of the mechanism but there are several designs with it on the closing side as well.