Electric installation device e.g. key-switch or button - has second movable contact which connects both fixed contacts together in one state and is current-free in off state

摘要

The device has a movable contact member (20), a switch member (12) and a first fixed contact member (24). The switch member (12) actuates the movable contact member (20). The first fixed contact member (24) cooperates with the movable contact (20). A second fixed contact member (26) is also provided. In the on position, the movable contact (20) connects both fixed contacts (24, 26) to each other. In the off position, no current flows in the movable contact (20). ADVANTAGE - Prevents problem of excess current density in transition section and reduces manufacturing costs.