A fifth fixedcontact (150) extends through one side of the switch and provides the continous connection with the moving contact parts.
第五固定接触件（150）穿过开关的一侧延伸，提供与移动接触件的连续连接。
2
The movable safety piece is connected with the insulating system, is supported against by the control rod, and is in normally closed connection with the fixedcontact piece.