The utility model relates to a lower isolation environment-friendly semi-
solid-sealed switch, which realizes high integration of switch equipment by integrating a
circuit breaker assembly, a static contact
assembly, a moving contact
assembly and the like on a mechanism frame, and is characterized in that a
vacuum arc-extinguishing chamber is arranged in each semi-
solid-sealed polar pole, so that the generation and
diffusion of electric arcs can be effectively inhibited in a vacuum environment, and the reliability of the switch equipment is improved. The
breaking capacity and the arc extinguishing speed of the switch are improved, the
cam transmission assemblies are driven through the rotating motion of the main shaft, then the opening and closing operation of the
vacuum arc extinguishing chamber is achieved, mutual interference between the
cam transmission assemblies is effectively prevented through the arrangement of the
interphase check rings, and the sealing performance of the
vacuum arc extinguishing chamber is enhanced through the fixed sealing plug. According to the utility model, external impurities and
moisture are prevented from invading, so that the service life of the switch is prolonged, the conductive clamp ensures good connection between the vacuum arc-extinguishing chamber and an
external circuit, and the conductive performance and the
electrical stability of the switch are improved.