Patent ID: 8513558
Filing Date: 2013-08-20
Classification: H01H

Abstract:
1. Electromechanical circuit breaker intended to establish and break the current in a main circuit ( 3 , 4 ) and comprising a fixed contact element ( 5 ) and a moving contact element ( 6 ) which in a first position are in electrical contact with each other for carrying the current of the main circuit ( 3 , 4 ), said moving contact element ( 6 ) being adapted to be displaced to a second position in which it is separated from the fixed contact element ( 5 ) so that the current in the main circuit is cut off, the circuit breaker being provided with a blow-out device ( 2 ) comprising a magnetising coil ( 11 ) traversed by a magnetising current for producing a magnetic field (B) adapted to drive an arc ( 17 ) generated by the separation of said two contact elements ( 5 , 6 ) into an arc extinction means ( 1 ), the blow-out device ( 2 ) comprising electrode means ( 9 , 10 ) electrically connected to the magnetising coil ( 11 ) and adapted to cooperate with said arc ( 17 ) in such a manner that the latter generates said magnetising current in the magnetising coil ( 11 ), the magnetic field (B) for driving the arc ( 17 ) being generated by the action of said arc ( 17 ), characterised by the fact that the blow-out device ( 2 ) further comprises magnetic means ( 15 , 16 ) for producing a magnetic field (B 15 , B 16 ) radially directed with respect to the arc ( 17 ) and adapted to generate a force (F 15 , F 16 ) on the arc ( 17 ) in order to displace the latter so that the arc ( 17 ) is forced to contact the electrode means ( 9 , 10 ).