Vacuum circuit breaker with built-in isolation fracture

The invention relates to the field of circuit breaker design, in particular to a built-in isolation fracture vacuum circuit breaker which comprises a circuit breaker main body capable of controlling a circuit, the circuit breaker main body is communicated with a vacuum switch chamber, and a static contact used for being communicated with an external circuit is fixedly connected in the switch chamber. A static contact is arranged in the switch chamber, a moving contact capable of moving to be in contact with or away from the static contact is arranged in the switch chamber, the circuit breaker main body and the switch chamber are communicated with a control box, a switch transmission device for controlling the moving contact to move is arranged in the control box, and the static contact and the moving contact are arranged in the switch chamber, so that better protection is carried out, and the service life is prolonged. 本申请涉及断路器设计的领域，尤其是涉及一种内置隔离断口真空断路器，包括能对电路进行控制的断路器主体，断路器主体连通有内部呈真空的开关室，开关室内固定连接有用于连通外部电路的静触头，开