Schneider Electric Industries Sas

Herve Vallier

Loic Rondot

Jean-Claude Ramirez

Benoit Hage

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.

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Monestier de Clermont, France

Herve Vallier