| 摘要 |
An electromagnetic device of a switching apparatus including a mobile armature for rotating in a fixed frame between two inactive and active positions, at least one permanent magnet mounted in the fixed frame, and at least one coil mounted in the mobile armature and control means for delivering a control current into the coil. The mobile armature is monostable; in an inactive position, a lever actuated by the mobile armature separates the fixed contacts from the mobile contacts of the apparatus. In an active position, the lever is released from the mobile armature and a spring presses the mobile contact against the fixed contacts. |
