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Circuit breaker

A technology for circuit breakers and trippers, applied in the field of plastic case circuit breakers, can solve problems such as rapid heating, potential safety hazards, damage to circuits or electrical appliances, etc., and achieve the advantages of not being easy to wear and deform, improving mechanical life, and having long edge lengths Effect

Active Publication Date: 2016-01-20
PAISENTE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The limit breaking current is an important performance index of the plastic case circuit breaker. When the circuit breaker passes a current larger than the limit breaking current, the moving contact and the static contact will heat up rapidly. When there is no time to break, the surface of the moving contact and the static contact will melt and stick together, causing the circuit breaker to fail to break normally, resulting in damage to the circuit or electrical appliances, which cannot play the original protective role, and has certain safety hazards

Method used

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Examples

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Embodiment Construction

[0018] Such as Figure 1-Figure 7 As shown, the specific embodiment of the present invention is a circuit breaker, including a panel 7, a housing 8 and a contact system installed in the housing, an operating mechanism 3, an arc extinguishing cover 4, and a release 5. The contact system includes a static The contact 1 and the moving contact 2 opposite to the static contact 1, the arc extinguishing cover 4 is arranged on the side of the joint between the moving contact 2 and the static contact 1, the moving contact 2 is linked with the operating mechanism 3, and the operating mechanism 3 Linkage connection with the release 5 through the traction rod 6, the static contact 1 includes a static contact bearing part 11, a wiring part 12 for introducing current, and a bend for connecting the static contact bearing part 11 and the wiring part 12 part 13, the upper side of the static contact bearing part 11 is provided with a static contact 14, the lower side of the static contact beari...

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Abstract

The invention relates to a circuit breaker. The circuit breaker comprises a moving contact, a static contact, an operating mechanism, an arc extinguishing system and a release. The arc extinguishing system is arranged on one side of a connection portion of the moving contact and the static contact. The moving contact is connected to the operating mechanism in a linkage mode. The operating mechanism is connected to the release through a draw bar in the linkage mode. The static contact comprises a static contact point bearing portion, a wiring portion used for introducing a current and a bending portion used for connecting the static contact point bearing portion and the wiring portion. An upper side surface of the static contact point bearing portion is provided with a static contact point. The moving contact comprises a moving contact seat, a moving contact sheet, a moving contact point and a moving contact shell. The moving contact seat is installed in the moving contact shell. A tail end of the moving contact sheet is hinged to the moving contact seat. The moving contact point is arranged on a top end of the moving contact sheet. The moving contact shell forms an opening above the connection portion of the moving contact sheet and the moving contact seat. When a heavy current passes through, the moving contact is bounced and disconnected because of a Lorentz force so that a segmentation capability of the circuit breaker is increased.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a plastic case circuit breaker. Background technique [0002] The limit breaking current is an important performance index of the plastic case circuit breaker. When the circuit breaker passes a current larger than the limit breaking current, the moving contact and the static contact will heat up rapidly. When there is no time to break, the surface of the moving contact and the static contact will melt and stick together, resulting in the failure of the circuit breaker to break normally, resulting in damage to the circuit or electrical appliances, which cannot play the original protective role, and has certain safety hazards. Contents of the invention [0003] In order to overcome the above defects, the present invention provides a circuit breaker with forced breaking capacity, the dynamic and static contacts are not easy to be welded, and the ultimate breaking capacity is high. [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10H01H71/42
CPCH01H71/10H01H71/42
Inventor 吴万雄周荣林吴宏树蔡俊
Owner PAISENTE ELECTRICAL CO LTD
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