Moving contact assembly and three-station isolation grounding switch

The invention discloses a moving contact assembly and a three-station isolation grounding switch, the moving contact assembly comprises a moving contact base body and a rack, the moving contact base body is of a slender tubular structure, a positioning groove used for positioning the rack is formed in the inner wall of the moving contact base body along the length direction, the shape of the positioning groove is matched with the shape of the bottom of the rack, and the rack is arranged in the positioning groove. And the rack is fixed in the positioning groove through a bolt. According to the invention, while the processing precision of the moving contact and the rack is ensured, the processing difficulty is effectively reduced, so that high-precision meshing of the gear shaft and the moving contact rack can be realized, the transmission efficiency is improved, and the centering precision after the moving contact is switched on is ensured. 本申请公开了一种动触头组件及三工位隔离接地开关，包括：动触头基体和齿条，动触头基体为细长管状结构，动触头基体的内壁上沿长度方向开设有用于对齿