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Residual current protection trip mechanism and release

A technology of residual current and tripping mechanism, applied in the direction of protection switch operation/release mechanism, protection switch, emergency protection device, etc., can solve the problems of small design margin, false tripping, large tripping force, etc., and improve work The effect of reliability and accurate positioning

Active Publication Date: 2014-10-15
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the circuit breaker of the prior art, although the cooperation between the residual current protection device and the thermal magnetic release mechanism can be realized, the tripping force provided by the residual current protection device is required to be large, and the design margin is small. Short-circuit faults, polluted mechanisms, etc., cause the release to fail to trip or trip by mistake, reducing reliability

Method used

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  • Residual current protection trip mechanism and release
  • Residual current protection trip mechanism and release
  • Residual current protection trip mechanism and release

Examples

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Embodiment Construction

[0036] In describing the embodiments shown in the figures, specific terminology is employed for the sake of clarity. However, the disclosure of this patent specification is not intended to be limited to the specific terms so selected, and it is to be understood that each specific element includes all technical equivalents which operate in a similar manner and achieve a similar effect. In the following description, "comprising", "comprising" and other similar terms should be understood as open-ended, and it is intended that there may be other unspecified elements or components in addition to the specified ones, and These unspecified elements or components can be easily conceived by those skilled in the art according to the teaching of the present invention.

[0037] Although the exemplary embodiments are described with some technical limitations with reference to the drawings, these descriptions are not intended to limit the scope of the present invention, and not all parts or ...

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PUM

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Abstract

A tripping mechanism protecting from residual current and a tripper (100). The tripping mechanism (102) comprises a tripping bar (20) and a hammer (30). The hammer is engaged with the tripping bar so that the hammer is movable between a normal operating position and a tripping position. The tripping bar has a first engaging portion (23) and a second engaging portion (22A-22C). The first engaging portion interacts with a bar protecting from residual current (40) of a device protecting from residual current so as to operate the tripping bar to activate the hammer to trip. The second engaging portion interacts with at least one of a device protecting from overload and a device protecting from short-circuit so as to operate the tripping bar to activate the hammer to trip. The tripping mechanism is shared by the device protecting from residual current, the device protecting from overload and the device protecting from short-circuit. Therefore, the structures are simplified, and the cost is saved.

Description

technical field [0001] The present invention relates to a molded case circuit breaker, and in particular to a thermal electromagnetic release for the molded case circuit breaker. The thermal electromagnetic release can cooperate with a residual current protector to realize overload protection and short circuit protection at the same time , Also realize residual current protection. Background technique [0002] Molded case circuit breakers are widely used in medium and low voltage circuits to distribute electric energy and protect circuits, power supplies and electrical equipment. [0003] Molded case circuit breakers are usually assembled with a release, which performs protection functions, namely: overload protection, short circuit protection, time delay protection and leakage protection. As a traditional mechanical structure, circuit breakers generally provide thermal overload protection and short circuit protection. The thermal overload protection device is usually impl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/12H01H83/14
CPCH01H83/22H01H71/1009H01H2009/0088H01H71/505H01H71/10
Inventor 孙海涛施俊昌胡继伟范文杰
Owner SCHNEIDER ELECTRIC IND SAS
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