Opening device of circuit breaker and switch equipment

The invention discloses an opening device of a circuit breaker and switch equipment. The switch equipment comprises the opening device of the circuit breaker. The opening device of the circuit breaker comprises a fixed support, a driving assembly, an opening crank arm and an outer input plate. The fixed support is fixed on a bottom plate of a circuit breaker mechanism chamber; and the circuit breaker mechanism chamber is positioned on one side of a circuit breaker case in a cabinet body of the switch equipment. The driving assembly is rotatably installed on the fixed support. The opening crank arm is sleeved and fixed on an opening half shaft of the circuit breaker. One end of the outer input plate penetrates into a bottom plate of the circuit breaker mechanism chamber and is movably connected with the fixed support, the other end of the outer input plate penetrates out of the cabinet body for external operation, the outer input plate pushes the driving assembly to rotate around the fixed support towards the