Abstract: The present invention relates to a method (200) for diagnosing a circuit breaker comprising at least one pole, each pole comprising an electrical contact configured to switch between a closed position and an open position. The method comprises: for each pole of the circuit breaker, capturing (208A, 208B) an image of the electrical contact of the pole at least once; for each pole of the circuit breaker, determining (218A, 218B) at least once a state of pole health among at least two states by means of an artificial-intelligence algorithm, the artificial-intelligence algorithm receiving as input at least one image of the pole and delivering as output the state of pole health; determining (220A, 220B) a state of health of the circuit breaker among at least two states, depending on the state of health of each pole; and rendering (222, 224) the state of health of the circuit breaker.

Abstract: 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.

Abstract: The present invention relates to an arc extinguishing chamber for an electric protection apparatus comprising an arc formation chamber containing a stationary contact and a movable contact which, at the moment they separate, form an arc between them, said arc formation chamber communicating with the inlet of a second chamber called arc extinguishing chamber, at least one separating wall placed in a volume situated downstream from said arc extinguishing chamber, said wall extending in the direction of the gas flow so as to perform partitioning of the above-mentioned volume in the direction of this flow of the gases, and at least one exhaust outlet enabling the quenching gases to be removed to the outside of the apparatus.