Novel circuit breaker capable of avoiding high-temperature fusing of electric arcs

Abstract

The invention relates to the technical field of circuit breakers, and discloses a novel circuit breaker capable of avoiding high-temperature fusing of electric arcs. The circuit breaker comprises a circuit breaker body, a fixed block is fixedly installed in the circuit breaker body, and a supporting column is fixedly installed on the upper surface of the fixed block; a fixed ring is fixedly installed in the upper end of the supporting column, and an indicator lamp is fixedly installed at the lower end of the fixed ring; a deformation block is movably installed on the front face of the fixed ring, and a movable strip is fixedly installed at the lower end of the deformation block. Through the cooperative use of the deformation block, the movable strip, the connecting block, the fixed plate,the connecting strip and the cooling block, the temperature in the circuit breaker body can be reduced, so the situation that the joints of internal electronic components are not tightly connected dueto high temperature in the circuit breaker body is avoided, and unnecessary loss of the circuit due to the fact that the electronic components are not tightly connected and the circuit breaker cannotplay a role in protecting the circuit is avoided.

Description

technical field [0001] The invention relates to the technical field, in particular to a novel circuit breaker that avoids arc high-temperature fusing. Background technique [0002] Circuit breaker, also known as air switch, also known as automatic switch, low-voltage circuit breaker. The principle is: when the working current exceeds the rated current, short circuit, loss of voltage, etc., the circuit is automatically cut off, the circuit breaker can be used to distribute electric energy, start the asynchronous motor infrequently, and protect the power supply line and the motor. It can automatically cut off the circuit in case of overload, short circuit and undervoltage. [0003] At present, in the circuit breaker in the prior art, the current in the circuit is overloaded, and when the circuit is broken through the circuit breaker, the arc extinguishing chamber in the circuit breaker will eliminate the generated arc, but when the arc is released, the current becomes larger,...

AI Technical Summary

Problems solved by technology

[0003] At present, the circuit breaker in the prior art is overloaded with current in the circuit, and when the circuit is broken through the circuit breaker, the arc extinguishing chamber in the circuit breaker will eliminate the generated arc, but when the arc is released, the current becomes larger, The increased heat generation will generate a lot of heat, which may melt some electronic components in the circuit breaker. For example, the tin soldering part of the electronic component, because the melting point of tin is very low, it will melt when it is heated, so the circuit breaker The connection of the electronic components may not be tightly connected, resulting in the circuit breaker in the later use process, the electronic components are not tightly connected, the circuit breaker cannot protect the circuit, causing unnecessary losses to the circuit. On the one hand, people cannot directly observe whether there is leakage on the circuit breaker, and usually need to use a test pen to know, which is troublesome

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