Circuit breaking apparatus with remote controlled opening and closing of its circuits

A circuit breaking apparatus, in particular a multiphase circuit breaker comprising:

• i- a common quick trip mechanism which may be set and released by means of a local manual control member,
• ii- at least a power circuit comprising between two terminals a switch having a first mobile contact connected to the mechanism so as to be actuated thereby between a closed and an opened positions, and a second mobile contact carried by a first pivoting lever so as to effect with respect to the first mobile contact, retracting or advancing movements between at least a retracted position, wherein the second mobile contact is spaced from the first mobile contact, and an advanced position, wherein the second mobile contact bears on the first mobile contact when said first mobile contact is in its closed position, said first pivoting lever being provided with an extension,
• iii- detectors which react to overcurrent passing through said power circuit by causing the tripping of said mechanism and consequently the automatic opening of the switch,
• iv- an electromagnet which is associated with the apparatus for causing remote controlled opening of the switch not causing the tripping of said mechanism, said electromagnet having an armature, and being controlled by current impulses each causing a brief outgoing and return movement of the armature,
• v- a transmitting member having abutment means, a first end portion hinged to said extension and a second end portion coupled to said armature, said transmitting member being movable between a first position which corresponds to the advanced position of the second mobile contact, and a second position which corresponds to the retracted position of the second mobile contact,
• vi- spring means acting on said transmitting member to put it in its first position, and
• vii- a locking device having locking means which present a locking state, wherein it cooperates with said abutment means so as to lock said transmitting member in its second position and an unlocking state, wherein said transmitting member which is unlocked and is subjected to the action of said spring means, passes into its first position, said locking device having control means causing said locking means to pass from one of said states to the other in response to each current impulse applied to the electromagnet.

A circuit breaking apparatus, in particular a multiphase circuit breaker comprising:

• i- a case provided with a first association face having an opening and first cooperating surfaces, said case comprising:
• a common quick trip mechanism which may be set and released by means of a local manual control member.
• at least a power circuit comprising between two terminals a switch having a first mobile contact connected to the mechanism so as to be actuated thereby between a closed and an opened positions, and a second mobile contact carried by a first pivoting lever so as to effect with respect to the first mobile contact, retracting or advancing movements between at least a retracted position, wherein the second mobile contact is spaced from the first mobile contact, and an advanced position, wherein the second mobile contact bears on the first mobile contact when said first mobile contact is in its closed position,
• detectors which react to overcurrent passing through said power circuit by causing the tripping of said mechanism and consequently the automatic opening of the switch,
• ii- a separable remote control box having a second association face and second cooperating surfaces shaped so as to cooperate with said first cooperating surfaces for removably fixing said box on said case, said box including an electromagnet which is adapted for causing remote controlled opening of the switch not causing the tripping of said mechanism, said electromagnet having an armature which serves to actuate said first pivoting lever by means of removable coupling means having a coupling element connected to the armature and passing through said opening to be in a cooperating relation with said first pivoting lever when said box is fixed to said case,
• iii- a removable cover adapted to be removably fixed on said first association face, when said box is disconnected from said case, said cover having means for locking against rotation said first pivoting lever in a position which corresponds to the advanced position of the second mobile contact.