固定开关灰泥（2）之间具有额定电流触点和固定电弧触头（3）具有可移动的额定电流触点（5）用bewichglichen切换灰泥（4）配合，并且一个移动电弧触头（6）和一个第一凸缘（7）的导通电阻（ 8）。 用于保存另一对固定触点部件的额定电流触点的触点的目的（2）不是通过可动接触片在所述切换移动的滑动额定电流触点形成（4）（14）的。 从运动额定电流触点切换时，他首先联络（5），从而一个电阻（9）接触并导通电阻（8）由包围电流通路。 的导体（20）与通过导通电阻（8）稍晚桥接可动电弧触头（6）连接在所述第一凸缘（7），其固定侵蚀（3）接触的装置的接触之后。 在滑动额定电流触点（14）的闭合运动的进一步过程上的额定电流桥接接触（19）向上延伸，并提供额定电流路径前。 当关掉滑动额定电流触点（14）运行到所述可动触点（4）通过真空，阻尼（17）由过度延迟而使额定电流触点之前电弧触头分离。

Between a stationary switching stucco (2) with a rated current contact and a stationary arcing contact (3) with a bewegligchen switching stucco (4) with a movable rated current contact (5) and beweghchem arcing (6) cooperates and a first flange (7) is an on-resistance (8 ) arranged. Purpose saving of a further pair of contacts of the rated current contact of the fixed contact member (2) as by the movable switching stucco (4) in the switching-sliding sliding rated-current contact (14) is formed. It is first contacted when switching from the moving rated-current contact (5) and thus a resistor contact (9) and the on-resistance (8) made inclusivity current path. After contact of the means of a conductor (20) with the first flange (7) connected fixed erosion contact (3) by the movable arcing contact (6) of the on-resistance (8) is muted somewhat later. In the further course of the closing movement of the sliding rated-current contact (14) runs on a rated current bridging contact (19) and produces a rated current path. Turning the sliding rated-current contact (14) the movable contact (4) passes through a vacuum attenuation (17) after a delay so that separate the rated current contacts before the arcing contacts.