Electronic breaker

Abstract

The invention provides an electronic-type circuit breaker, which consists of a signal collector, a power supply source, an amplification unit, an excitation unit and a power driving unit, wherein the signal collector is serially connected with a main power loop; the signal collector is connected with the positive input end of the amplification unit; the output end of the amplification unit is connected with the excitation unit; the excitation unit consists of a switching element; the output end of the excitation unit is connected with the input end of the power driving unit; and a load is connected with an output loop of the power driving unit. As the electronic-type circuit breaker consists of electronic components, and as the sampling of current signals and the output control on switch motions are both realized by the electronic components, the circuit breaker can not falsely act under the influence of ambient temperature or produce arcs, so that the service life of the circuit breaker is prolonged.

Description

Technical field: [0001] The invention relates to the electrical field, in particular to a miniature circuit breaker for overcurrent protection, overvoltage and leakage protection, in particular to an electronic circuit breaker. Background technique: [0002] In the prior art, the action of the circuit breaker from tripping to breaking is realized by the heat generated by the current induced by the bimetal element, and the circuit breaker is broken under the action of the heat. When the temperature of the outside environment rises and the heat is transferred to the inside of the circuit breaker, the bimetallic element will also produce directional displacement, which will also force the free tripping mechanism of the circuit breaker to trip and force the circuit breaker to break. This breaking caused by the ambient temperature is a malfunction and cannot be overcome. At the same time, the traditional circuit breaker connects the power line and the load as a whole, and the mo...

AI Technical Summary

Problems solved by technology

This kind of breaking caused by the ambient temperature is a malfunction and cannot be overcome.

At the same time, the traditional circuit breaker connects the power line and the load as a whole, and the moving contact and the static contact will generate an arc at the moment of separation. The arc is located between the moving contact and the static contact, and the heat in the arc will spread to the surrounding. The heavier the load, the gr

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