Patent ID: 6509817
Filing Date: 2003-01-21
Classification: H01H

Abstract:
A multipolar circuit breaker including a switch contact, an arc extinguisher, an input terminal, an output terminal, and an overcurrent tripping device for each pole, and including in common to each pole a switch mechanism operating said switch contact, and a trip mechanism opening said switch contact through said switch mechanism when said overcurrent tripping device is operated, whereinsaid multipolar circuit breaker comprises an arc extinguisher casing having a ceiling portion, a bottom portion, and a sidewall connecting said ceiling portion and said bottom portion and formed in continuity so that no gap is formed by an outward internal pressure, and said switch contact and said arc extinguisher are stored so that the switch contact and the arc extinguisher for each pole are separated from the counterpart of a neighbor pole by a partition wall parallel to said sidewall of said arc extinguisher casing and separating each pole.