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Contact direct-acting molded case circuit breaker

A molded case circuit breaker, direct-acting technology, applied to circuit breaker components, circuit breaker contacts, protection switch operation/release mechanism, etc., can solve the risk of increasing the external counterweight of the handle and increasing the handle without reason. and other problems to achieve the effect of improving arc extinguishing efficiency and breaking capacity

Active Publication Date: 2017-06-27
TIANJIN JIAMEITE ELECTRIC EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the external counterweight of the handle is increased, especially when these combined circuit breakers are used on machines and trains, due to the effect of vibration, the risk of the handle falling off for no reason is increased

Method used

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  • Contact direct-acting molded case circuit breaker
  • Contact direct-acting molded case circuit breaker
  • Contact direct-acting molded case circuit breaker

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Experimental program
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Embodiment Construction

[0020] The invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention described herein and still achieve the advantageous effects of the invention. Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.

[0021] In the figure, 1. handle; 2. U-shaped connecting rod; 3. mechanism spring; 4. driving arm; 5. tripping lever; 6. swing rod; 7. energy storage pull rod; 8. slider; Cover; 10. Moving contact; 11. Slideway; 12. Static contact; 13. Input terminal; 14. Arc-extinguishing grid; 15. Magnetic tripping device; 16. Thermal tripping guide rod; 17. Bimetal sheet ; 18, thermal adjustment screw; 19, output terminal; 20, shell; 21, tripping lever spring.

[0022] Such as Figure 1-4 As shown, the static contact 12 i...

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Abstract

The invention provides a contact direct-acting molded case circuit breaker, which comprises a shell, and an input terminal, an output terminal, a static contact, a moving contact, a magnetism tripping mechanism, a thermal tripping mechanism and the like located in the shell, wherein the static contact is connected with the input terminal; a handle is connected with a moving contact driving mechanism; the moving contact is connected with the moving contact driving mechanism and is connected with the output terminal through the magnetism tripping mechanism and the thermal tripping mechanism; and the magnetism tripping mechanism and the thermal tripping mechanism are matched with the moving contact driving mechanism for use. The contact direct-acting molded case circuit breaker is characterized in that a sliding way is arranged on the moving contact driving mechanism; the moving contact can move along the linear sliding way; and the static contact is located on the extending line of the sliding way. The contact direct-acting molded case circuit breaker has the beneficial effects that a rotation swinging movement mode is changed to a linear movement mode for the moving contact, direct strike of the moving contact enables generated arcs to be directly in an arc extinguishing sheet direction, the arc extinguishing efficiency can be greatly improved, and the breaking capacity of the switch is improved.

Description

technical field [0001] The invention belongs to the technical field of electrical switches, in particular to a contact direct-acting molded case circuit breaker. Background technique [0002] The rail-mounted electrical switch and its components originated in Europe have a high degree of standardization and miniaturization. The control part exposed outside the switch box is a standard 45 mm high, and the thickness of the components is designed to be a multiple of 9 mm. The standardization scheme is conducive to large-scale industrial production in the electrical industry and the free combination and assembly of switch box frames. The development of air circuit breakers in terms of standardization and miniaturization is particularly prominent. For safety protection such as current limiting, short circuit, leakage, phase loss, and undervoltage, circuit breakers are indispensable electrical components. Various styles of European standard air circuit breakers have entered peopl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04H01H71/10
CPCH01H71/10H01H73/04
Inventor 王克诚
Owner TIANJIN JIAMEITE ELECTRIC EQUIP CO LTD
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