State detection device of circuit breaker

The utility model discloses a state detection device of a circuit breaker, which comprises the circuit breaker, a detection box is arranged outside the circuit breaker, a detection cavity is arranged inside the detection box, and an automatic detection circuit and a manual detection circuit are arranged inside the detection cavity. The circuit breaker is provided with a conversion shift, the conversion shift comprises a first contact and a second contact, the first contact and the second contact are respectively used for connecting an automatic detection circuit and a manual detection circuit, and the circuit breaker is switched between an automatic detection mode and a manual detection mode by shifting the conversion shift; the automatic detection circuit comprises an indicating lamp and RS-485. The indicating lamp is connected with the circuit breaker through the RS-485 The manual detection circuit comprises a detection mechanism, the detection mechanism comprises a fixed rod and a telescopic rod, the fixed