| 主权项 |
1. A single-pole switching unit (80) for electrical switchgear device comprising
electrical switching means comprising:
two stationary contacts (320) respectively connected to an electrical pad (45) for connecting to said unitary unit;a moving contact (330) including a bridge having a body elongated along the longitudinal axis (X) and having two ends each able to cooperate with a stationary contact (320) in a closed position of the contacts (320, 330) of said unit; a device (34) for actuating the moving contact (330) including a moving contact holder (38);the moving contact (330) including a first branch (331) and a second branch (332) designed to connect the two stationary contacts (320) in the closed position of the contacts (330, 320), respectively, the first and second branches (331, 332) being movable relative to one another such that:
the first current passage branch (331) is separated from the two stationary contacts (320), while the second branch (332) is still in contact with said stationary contacts (320) when the contacts (330, 320) of said unit are opened; the second current switching branch (332) is in contact with the two stationary contacts (320), while the first branch (331) is separated from the stationary contacts (320) when the contacts (330, 320) of said unit are closed;characterized in that the two stationary contacts (320) are in the shape of a J at the contact areas (37) with the second branch (332), such that, in the closed position of the contacts (320, 330), the direction of the electrical current circulating in a stationary contact (320) is opposite the direction of the electrical current circulating in the second branch (332), and in that the two stationary contacts (320) have a straight shape at the contact areas (39) with the first branch (331), such that the direction of the electrical current circulating in a stationary contact (320) is identical to the direction of the electrical current circulating in the first branch (331). |
