Abstract: The invention relates to a double-disconnect double-pole bidirectional contactor configured to be mounted on two parallel busbars, comprising, for each pole, an interrupter chamber, in which the following are disposed: a moving bridge having first and second moving contacts; a first fixed contact and a second fixed contact; a pair of magnets, able to generate a magnetic field with a constant direction, so as to generate a magnetic force for moving an arc appearing between the fixed contacts and the moving contacts of the moving bridge passing from a closed state to an open state; four blocks of fins; four arc guides. The two interrupter chambers are configured to simultaneously extinguish arcs having a first current direction for one pole, and arcs having a second current direction for the other pole, the first and second current directions being opposed.

Abstract: A high-voltage DC electrical distribution plate with two integrated electromechanical power contactors. Chambers of fixed and movable contact terminals of the two contactors are disposed on a first of the major surfaces of the plate, while on the second major surface of the plate are disposed complementary assemblies of the two contactors, each complementary assembly including a motor intended to activate the contact terminals of the contactor in question. The other components disposed on the second major surface of the plate leave a free space constituting an area of attachment of the complementary assemblies of the two contactors, this area being dimensioned to allow the arrangement of the complementary assemblies of the contactors in two orthogonal orientations allowing the motors to activate contact terminals of different sub-assemblies of the contact chambers and thus to make the parallel or series configurations of the contactors.

Abstract: Two electric poles are controlled in one and the same circuit breaker by an undivided opening mechanism controlled by a pyrotechnic actuator. The opening of the circuit that is brought about by this actuator, which is fast for a large opening travel of the mobile contacts, makes it possible to extinguish electric arcs under good conditions. The poles may be placed in series on one and the same electrical circuit in order to reduce the potential difference across the terminals of each of them, thereby further increasing the effectiveness of the circuit breaker in terms of arc extinguishing.

Abstract: A contactor includes a bridge which is movable between a closed state and an open state, including movable contacts; two fixed contacts facing the movable contacts, wherein in the closed state the movable contacts are in contact with the fixed contacts and in the open state the movable contacts are spaced apart from the fixed contacts; two magnets generating a magnetic field and generating a magnetic force in order to move an arc appearing between the fixed contacts and the movable contacts passing from a closed state to an open state; two fin blocks; and two pairs of arc guides, each being directed from the movable contacts to each of the two fin blocks, wherein at least fin slots forming a groove of the fin blocks face each guide of a pair of arc guides.

Abstract: Device for transforming and for rectifying polyphase, in particular three-phase, voltage comprising a polyphase transformer comprising a voided central zone, a voltage rectifier circuit that is connected to the transformer and a fan. The voltage rectifier circuit includes at least three heat dissipation units forming a right prism of regular polygonal section comprising a voided central zone, the transformer, the voltage rectifier circuit and the fan being positioned such that at least some of the airflow produced by the fan flows through the voided central zone of the rectifier so as to immerse the transformer.

Abstract: Device for transforming and for rectifying polyphase, in particular three-phase, voltage comprising a polyphase transformer (17) comprising a voided central zone (22), a voltage rectifier circuit (18) that is connected to the transformer and a fan (20). The voltage rectifier circuit includes at least three heat dissipation units (18a, 18b, 18c) forming a right prism of regular polygonal section comprising a voided central zone (23), the transformer, the voltage rectifier circuit and the fan being positioned such that at least some of the airflow produced by the fan flows through the voided central zone of the rectifier so as to immerse the transformer.

Abstract: The invention relates to an electric power distribution box for an aircraft, comprising a frame (3) containing at least one power connector (7) formed of one or more slide rails (8) that are able to interact with one end (11) of a power circuit board (9), said power circuit board (9) comprising at least one switching element (13) for an electric power distribution plate. The invention also relates to an electric power distribution assembly (1) comprising such a power distribution box.

Abstract: The invention relates to an electric power distribution box for an aircraft, comprising a frame (3) containing at least one power connector (7) formed of one or more slide rails (8) that are able to interact with one end (11) of a power circuit board (9), said power circuit board (9) comprising at least one switching element (13) for an electric power distribution plate. The invention also relates to an electric power distribution assembly (1) comprising such a power distribution box.