Automatic low -voltage circuit breaker controlling means

The utility model provides an automatic low -voltage circuit breaker controlling means. The device includes: analog signal acquisition unit, data processing unit, human -computer interaction unit, dropout execution unit and power supply, adopt luo gefusi base -line circle and current sampling circuit will simulate voltage signal input analog signal modulate circuit, analog signal modulate circuit electric current signal input analog signal modulate circuit, voltage sample transfer circuit signal input simulation multiway switch and convert digital signal input data signal input 1 into, microprocessor in the data processing unit handles the data signal who inputs and judges and/or export corresponding trip signal to the execution unit that threads off to carry out the action of threading off, the utility model has the characteristics of the accuracy is judged to multiplex condition obstacle, circuit transformation adjustment is convenient and it is convenient to maintain.