A circuit breaker for avoiding high temperature fusing of arc

Abstract

The invention relates to the technical field of circuit breakers, and discloses a circuit breaker for avoiding high-temperature arc fusing, comprising: a circuit breaker body, a fixing block is fixedly installed inside the circuit breaker body, and a support column is fixedly installed on the upper surface of the fixing block The upper end of the support column is fixedly installed with a fixed ring, the lower end of the fixed ring is fixedly installed with an indicator light, the front of the fixed ring is movably installed with a deformation block, and the lower end of the deformation block is fixedly installed with a movable strip. Through the cooperation of deformation blocks, movable strips, connecting blocks, fixed plates, connecting strips and cooling blocks, the temperature in the circuit breaker body can be cooled, ensuring that the internal electronic components will not be connected due to high temperature in the circuit breaker body. If the connection is not tight, the electronic components are not tightly connected, and the circuit breaker cannot protect the circuit, causing unnecessary losses to the circuit.

Description

technical field [0001] The invention relates to the technical field, in particular to a circuit breaker for avoiding high temperature fusing of an arc. 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, voltage loss, 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 motor. It can automatically cut off the circuit in the event of overload or short circuit and undervoltage faults. [0003] At present, in the circuit breaker in the prior art, the current is overloaded in the circuit. When the circuit breaker is used to open the circuit, the arc extinguishing chamber in the circuit breaker will eliminate the generated arc. However, when the arc is discharged, the current become...

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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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