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Molded case circuit breaker having pressurized contact fixing structure

A circuit breaker and molding technology, which is applied to circuit breaker components, circuit breakers with excessive current, circuit breaker contacts, etc., can solve the problem of decreased reliability of circuit breaker product manufacturers, increase of current-carrying unit temperature, Problems such as contact deviation, to achieve the effect of increasing physical fixability and preventing deviation

Inactive Publication Date: 2014-08-27
HYUNDAI HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, such molded case circuit breakers have the following problems: when a fault current flows, the temperature of the current-carrying unit increases; contact deviation due to solder fusion between the movable element and the contact points; Occurs after the opening operation of the molded case circuit breaker so that current carrying reliability is not guaranteed
These problems can cause a rapid decline in breaker duration and product manufacturer reliability, which can lead to reduced sales of the manufacturer's other products

Method used

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  • Molded case circuit breaker having pressurized contact fixing structure
  • Molded case circuit breaker having pressurized contact fixing structure
  • Molded case circuit breaker having pressurized contact fixing structure

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Embodiment Construction

[0033] The embodiments and configurations depicted in the drawings are for illustrative purposes only and do not represent all the technical scope of the present invention, so it should be understood that various equivalents and modifications may exist at the time of filing this application. Although the preferred embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art will understand that various modifications, additions and Substitution is possible.

[0034] The terms and words used in the specification and claims should be construed as relating to the technical scope of the present invention based on the fact that the inventor can properly define the concept of terms in order to best explain the present invention.

[0035] The terms 'first' and 'second' may be used to refer to various components, but the components may not be limited to the above terms. The terms will be used to distinguish one component from another. ...

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Abstract

The present application comprises: a mover which is rotatably arranged in a main body and one side of which has a pressurized part having a predetermined gradient; and a movable contact which is formed to correspond to the gradient of the pressurized part and which is fixed by the pressurized part. The present application provides a molded case circuit breaker having a pressurized contact fixing structure, which can prevent a deviation of the movable contact caused by the melting of the lead material between the mover and the movable contact even when the fault current is introduced and the temperature of an electrical connection unit excessively rises. The movable contact is formed to have a gradient corresponding to the shape of the pressurized part, thus improving physical fixing properties. A welded part is arranged between the pressurized part and the movable contact so as to provide fixing properties of welding the pressurized part and the movable contact again even when the lead material is cooled after being molten.

Description

technical field [0001] The present application relates to a molded case circuit breaker having a pressurized contact structure, and more particularly to a circuit breaker having a structure capable of preventing the movable contact from deflecting due to solder fusion between the movable element and the movable contact ( Molded case circuit breaker with a pressurized contact structure even if the temperature of the current-carrying unit increases abnormally due to the inflow of unexpected current. Background technique [0002] Typically, a molded case circuit breaker is a circuit breaker for overload protection and short circuit protection and is housed in a molded case. Molded case circuit breakers are used to protect indoor low voltages below AC600V or DC250V and are commonly called NFBs. [0003] Because molded case circuit breakers are small and safe to operate and do not require fuse replacement, molded case circuit breakers are widely used instead of combination knife...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10H01H73/04
CPCH01H71/10H01H73/04H01H11/06H01H71/2418H01H73/045H01H2011/067
Inventor 安炳秀
Owner HYUNDAI HEAVY IND CO LTD
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