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Circuit breaker

A circuit breaker and circuit technology, applied in the direction of circuits, circuit breaker parts, electric switches, etc., can solve the problems of partition damage, partition thickness thinning, difficult partition strength, etc., to prevent damage and prevent intrusion into the load side Effect

Active Publication Date: 2007-11-14
FUJI ELECTRIC FA COMPONENTS & SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when high-temperature and high-pressure arc gas is generated when a large current is interrupted, the internal pressure rises and the separator is damaged.
In addition, for its internal structure, when the space for arranging the partition is insufficient, the thickness of the partition becomes thin, and there is a problem that it is difficult to ensure the strength of the partition

Method used

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Embodiment Construction

[0037] Hereinafter, a circuit breaker according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, although various limitations are made on constituent elements, types, combinations, shapes, relative arrangements, etc., these are merely examples, and the present invention is not limited thereto.

[0038] Fig. 1 is a longitudinal sectional view showing a schematic configuration of a circuit breaker according to an embodiment of the present invention.

[0039] In FIG. 1 , the circuit breaker is provided with a fixed contact 3 , a movable contact 5 , and a support frame 9 for an insulator. The fixed contact 3 is fixed on the housing 1, the movable contact 5 is substantially linear, and can be opened and closed with the fixed contact 3, and the support frame 9 holds the movable contact 5 , so that it can rotate through the opening and closing shaft. Further, a movable contact 8 is provided at the fr...

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PUM

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Abstract

The invention discloses a circuit breaker, which can prevent clapboard from breaking resulted from overpressure inside the circuit breaker, and can separate the breaking part with fixed contact, movable contact and explosion chamber from clapboard for loading side with switching mechanism and overcurrent trip. The breaking part with fixed contact(3), movable contact (5) and supporting rack (9) andexplosion chamber (6) are accepted in the out shell (1), and the stripping mechanism with trip rod (17) and switching machanism (4) are accepted in middle cover (2). The the breaking part with fixedcontact, movable contact and explosion chamber is separated from clapboard for loading side with switching mechanism and overcurrent trip by joint plate with conductivity such as metal joint plate (14).

Description

technical field [0001] The invention relates to a circuit breaker, which is especially suitable for protecting a switch mechanism and an overcurrent tripping device on the load side from being damaged by high-temperature gas blown from an arc generating part. Background technique [0002] In low-voltage circuits, circuit breakers such as wiring circuit breakers and earth leakage circuit breakers are used to interrupt the short-circuit current or load current flowing into the load. [0003] In this circuit breaker, it includes: a contact part provided with a fixed contact and a movable contact, a support frame that rotatably supports the movable contact, an arc extinguishing device for eliminating the arc generated by the contact part, and a drive that can The opening and closing mechanism that opens and closes the moving contact, the tripping mechanism that releases the lock of the opening and closing mechanism, and the overcurrent tripping device that detects an overcurrent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/06
CPCH01H9/34H01H71/123H01H73/18H01H2239/038
Inventor 山崎智雄佐藤朗史浅川浩司
Owner FUJI ELECTRIC FA COMPONENTS & SYST CO LTD