Electrical switching apparatus, and movable contact assemblyand shield therefor

A technology of movable contacts and electrical switches, which is applied in the field of protective covers, can solve the problems of harmfulness, affecting the operation of movable contact arms, these debris may be blown backward to the cross bar and may be attached to the contact arm springs, etc.

Inactive Publication Date: 2007-12-05
EATON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This debris could have been blown back towards the crossbar and could have attached to the contact arm spring causing the coils of the spring to fuse together
Often, this undesired condition can adversely affect the operation of the movable contact arm, as well as the current interrupting function of the circuit breaker

Method used

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  • Electrical switching apparatus, and movable contact assemblyand shield therefor
  • Electrical switching apparatus, and movable contact assemblyand shield therefor
  • Electrical switching apparatus, and movable contact assemblyand shield therefor

Examples

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Embodiment Construction

[0017] For purposes of illustration, embodiments of the invention will be described as applied to a spring-biased shield of a spring-biased movable contact assembly of a circuit breaker, but it will be apparent that these embodiments may also be used to shield and protect any known or suitable Various components of electrical switching devices such as, but not limited to, circuit switching devices and circuit interrupters such as circuit breakers, contactors, motor starters, motor controllers, and other load controllers.

[0018] Directional terms used herein, such as left, right, front, rear, clockwise, counterclockwise, and terms derived therefrom, refer to the orientation of elements shown in the drawings and should not be construed as references to rights unless expressly indicated therein. Requirements for restrictions.

[0019] As used herein, the statement that two or more components are "coupled" means that the components are connected together directly or through one ...

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PUM

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Abstract

A shield is provided for a circuit breaker including a housing, a movable contact, a stationary contact, and an operating mechanism for moving the movable contact into and out of electrical contact with the stationary contact. The operating mechanism includes a crossbar, a biasing member, and a movable contact assembly. The movable contact assembly has a movable contact arm pivotably coupled to the crossbar, and includes a first end carrying the movable contact, and a second end biased by the biasing member, thereby biasing the movable contact toward the stationary contact. The shield comprises an elongated barrier element having an opening which receives the movable contact arm. The elongated barrier element is coupled to the operating mechanism crossbar proximate the second end of the movable contact arm in order to shield at least the biasing member. A movable contact assembly, and electrical switching apparatus are also provided.

Description

technical field [0001] The present invention mainly relates to an electrical switchgear, and more particularly relates to an electrical switchgear with a movable contact assembly with a protective cover. The invention also relates to a movable contact assembly for an electrical switching device, and a protective cover for a movable contact assembly for an electrical switching device. Background technique [0002] Electrical switching devices, such as circuit breakers, provide protection for electrical systems from electrical fault conditions such as current overloads, short circuits, and other fault conditions. Generally, circuit breakers include a spring-actuated operating mechanism that opens electrical contacts in response to abnormal conditions to interrupt the flow of electrical current through conductors of an electrical system. [0003] The electrical contacts generally include one or more movable contacts and one or more corresponding stationary contacts. Each mova...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04H01H73/02H01H71/00H01H71/10
CPCH01H9/34H01H2009/305H01H73/18
Inventor B·J·沙尔滕布兰德R·W·米勒M·A·亚努塞克J·J·库尔兹G·C·伊奥菲达
Owner EATON CORP
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