Schneider Electric Industries Sas

Jean-Claude Ramirez

Bernard Loiacono

Loic Rondot

Herve Vallier

Jean-Yves Amblard

Loïc Rondot

Pierre Bussieres

Benoit Hage

Benoît Hage

Hervé Vallier

The present disclosure relates to an arc extinguishing chamber of an electrical circuit breaker, including an arc-forming chamber enclosing a fixed contact and a moving contact, which, at the time of their separation, form an arc between them, said forming chamber communicating with the input of an arc-quenching chamber comprising a stack of separators extending parallel to one another, and including a magnetic release situated on the side of the fixed and moving contacts and a switching horn situated on the opposite side, where the form of the separators varies progressively from one separator to the next, or by groups of identical separators from one group to another, or a mixture of both, in such a way that this form changes from the V having the largest opening surface area to the V having the smallest opening surface area, in the direction from the magnetic release to the switching horn.

Arc extinguishing chamber for electrical circuit breaker and circuit breaker comprising such a chamber

An arc extinguishing chamber includes an arc formation chamber containing a stationary contact and a movable contact which form an arc between them when separated. The arc formation chamber communicates with an inlet of a second chamber. A separating wall is placed in a volume downstream from said second chamber. The wall extends in the direction of the gas flow to partition the volume in the direction of the flow of the gases and exhaust outlets enabling the quenching gases to be removed outside of the apparatus. The separating wall(s) extend(s) in such a way as to partition in the direction of the flow to the outlets and to thereby form at least a first removal duct and a second removal duct, said ducts each being associated with an exhaust outlet and enabling a substantially complete separation to be achieved between a first flow and a second flow.

Extinguishing chamber for an electric protection apparatus and electric protection apparatus comprising one such chamber

The present invention relates to an electric protection apparatus comprising at least one switching module fitted on a mounting support, and a control device with an electromagnetic coil juxtaposed with one of the above-mentioned modules, this device comprising a magnetic shield arranged in a plane substantially perpendicular to the plane of the mounting support, said shield being located between the control device and the switching module situated closer to said device, facing the coil of the control device, and comprising at least one ferromagnetic part shaped in such a way that said shield performs magnetic guiding of the arc as soon as separation of the contacts takes place so as to increase the propulsion component of the Laplacian force acting on the arc as soon as separation of the contacts takes place.

Electric protection apparatus comprising at least one breaking module controlled by a control device with electromagnetic coil

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Saint Martin d'Uriage, France

Jean-Claude Ramirez