Patent ID: 6989501
Filing Date: 2006-01-24
Classification: H01H

Abstract:
1. A multipole current limiting circuit breaker comprising an insulating enclosure that contains: for each pole, at least one fixed contact and at least one movable contact, which can be mutually coupled/uncoupled upon closure/opening of the circuit breaker; actuation means, which provide the energy for moving said movable contacts and determines their coupling/uncoupling with the corresponding fixed contacts, said actuation means comprising a rotating actuation bar that is operatively coupled to the movable contacts of the poles; characterized in that said movable contacts have a fork-shaped body having a base element that supports two suns provided with plates for electrical contact with corresponding coupling surfaces of the fixed contact, and in that said fork-like body is connected to the actuation bar by virtue of elastic means accommodated at least partially in a seat formed in the bar, said elastic means being anchored to said bar and being fixed to said base element so as to support the movable contact and facilitate a substantially uniform distribution of the pressure applied by the contact plates to said corresponding coupling surfaces of the fixed contact.