Support assembly for circuit breaker and circuit breaker comprising same

The utility model provides a support assembly for a circuit breaker and a circuit breaker comprising the same, the circuit breaker comprises a vacuum arc-extinguishing chamber, and a first leading-out terminal module and a second leading-out terminal module which are respectively and electrically connected with the static end and the moving end of the vacuum arc-extinguishing chamber, and the support assembly comprises a first insulation support fixing device and a second insulation support fixing device, the first insulation supporting and fixing device is fixedly connected with the first end of the first wire outlet end module and the third end of the second wire outlet end module, and the second insulation supporting and fixing device is fixedly connected with the second end of the first wire outlet end module and the fourth end of the second wire outlet end module. The first supporting insulator is fixedly connected with the second end of the first wire outlet end module, and the second supporting insulat