| 摘要 |
A plug-in electric switch which includes a mobile unit and a fixed unit, the fixed unit having a recess and a spring biased sliding plate, the mobile unit including a contact arm and main contacts, secondary contacts carried by both the mobile and the fixed units, a rod slidably mounted relative to and carried by the mobile unit, the rod having an end with an inclined face adapted to contact an inclined face of a slidably mounted latch, spring biasing the latch in a direction to maintain the faces in sliding contact, and another spring normally biasing the rod in a direction toward the contact or support arm such that when the main contacts are closed the mobile and fixed units are prevented from being disengaged or re-engaged and at a partially engaged position the main contacts cannot be closed. |
