A single-pole switching unit for electrical switchgear device comprising - electrical switching means comprising: - two stationary contacts respectively connected to an electrical pad for connecting to said unit; - a moving contact including a bridge having a body elongated along a longitudinal axis and having two ends each able to cooperate with a stationary contact in a closed position of the contacts (320, 330) of said unit; - a device for actuating the moving contact including a moving contact holder; the moving contact including a first branch and a second branch designed to connect the two stationary contacts 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 is separated from the two stationary contacts, while the second branch is still in contact with said stationary contacts when the contacts (330, 320) of said unit are opened; - the second current switching branch is in contact with the two stationary contacts, while the first branch is separated from the stationary contacts when the contacts (330, 320) of said unit are closed; the two stationary contacts being in the shape of a J at the contact areas with the second branch, such that, in the closed position of the contacts (320, 330), the direction of the electrical current circulating in a stationary contact is opposite the direction of the electrical current circulating in the second branch, and in that the two stationary contacts have a straight shape at the contact areas with the first branch, such that the direction of the electrical current circulating in a stationary contact is identical to the direction of the electrical current circulating in the first branch. characterized in that the moving contact comprises two first current passage branches driven so as to go simultaneously from their open position to their closed position and vice versa, said first branches being arranged parallel to one another, and in that each first branch is mounted translatably on the moving contact holder between two so-called contact pressure positions, a first contact pressure spring applying a first contact pressure force on each first branch. - electrical switching means comprising: - two stationary contacts respectively connected to an electrical pad for connecting to said unit; - a moving contact including a bridge having a body elongated along a longitudinal axis and having two ends each able to cooperate with a stationary contact in a closed position of the contacts (320, 330) of said unit; - two stationary contacts respectively connected to an electrical pad for connecting to said unit; - a moving contact including a bridge having a body elongated along a longitudinal axis and having two ends each able to cooperate with a stationary contact in a closed position of the contacts (320, 330) of said unit; - a device for actuating the moving contact including a moving contact holder; - the first current passage branch is separated from the two stationary contacts, while the second branch is still in contact with said stationary contacts when the contacts (330, 320) of said unit are opened; - the second current switching branch is in contact with the two stationary contacts, while the first branch is separated from the stationary contacts when the contacts (330, 320) of said unit are closed;