公开(公告)号：US20230044944A1

公开(公告)日：2023-02-09

申请号：US17397600

申请日：2021-08-09

申请人： Rockwell Automation Switzerland GmbH

发明人： Rahel VON ARX ,  David URECH ,  Pascal STOLL ,  Markus GLOOR

IPC分类号： H01H9/28 ,  H01H9/16

摘要： The present invention is an industrial switching device which prevents a false indication of an open electrical circuit when contacts within the switching device are welded shut. Under normal operation, an actuator is selectively moved between a first position and a second position to reciprocally move a plunger to open and close the contacts. The actuator includes an indicator of whether the switching device is in the “ON” or “OFF” state. When the contacts are welded shut, a plunger engagement section interlocks with an actuator engagement section to prevent the actuator from moving from the “ON” position to the “OFF” position. A crossbar on the plunger engagement section embeds in the actuator engagement section to prevent the actuator from sliding over the plunger. A side member on the plunger engagement section prevents the actuator from sliding around the plunger.