Miniature circuit breaker

A technology for small circuit breakers and short-circuit protection, which is applied to circuit breaker parts, circuits, and protection switch parts to achieve the effects of improving breaking capacity, improving exhaust capacity, and simple structure

Pending Publication Date: 2018-12-25
ZHEJIANG CHINT ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when designing the position of the exhaust port, the safety hazards caused b

Method used

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  • Miniature circuit breaker
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Examples

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Example Embodiment

[0023] The following is attached Figure 1 to 7 The given examples further illustrate the specific implementation of the miniature circuit breaker of the present invention. The miniature circuit breaker of the present invention is not limited to the description of the following embodiments.

[0024] Such as figure 1 As shown, the miniature circuit breaker of the present invention includes a housing 10, and a first partition block 2, a first terminal block 1, an arc extinguishing chamber 3, a short circuit protection system 4, a contact system 8, and an operating mechanism 9 installed in the housing 10. , The overload protection system 7 and the second terminal block 5; the second terminal block 5 for connecting incoming lines is symmetrical to the first terminal block 1 and is respectively arranged on both sides of the housing 10, the contact system 8 and the overload The protection system 7 is distributed up and down between the arcing side of the arc extinguishing chamber 3 and...

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Abstract

A small circuit breaker includes a housing, and a first partition block mounted within the housing, A first terminal block and an arc extinguishing chamber, the first side plate of the housing is provided with an outlet port which is aligned with the connection cavity of the first terminal block and is used for connecting the outlet wire, the first terminal block is positioned between the first side plate of the housing and the air outlet side of the arc interrupting chamber, Also, the first partition block includes a partition plate disposed between the outlet side of the arc extinguishing chamber and the first terminal block, and the partition plate is provided with a first exhaust port inclined downward, one end of the first exhaust port is opposite to the outlet side of the arc extinguishing chamber, and the other end is positioned below the first terminal block and points to a portion where the first side plate is positioned below the outlet port. The invention provides a miniature circuit breaker with simple structure, high exhaust capacity and safety performance.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a small circuit breaker. Background technique [0002] Due to the small size of the existing circuit breaker, the structural design of 1P+N is realized within the width of 18mm to ensure that the product has the function of short circuit and overload protection. Naturally, the exhaust space of the product is limited, so that the arc entering the arc extinguishing chamber is affected, and the breaking capacity restricted. In order to improve the capacity of existing circuit breaker products, it is usually necessary to reasonably design the exhaust position, so as to achieve the purpose of breaking the arc and quickly entering the arc extinguishing chamber. However, when designing the position of the exhaust port, the potential safety hazard caused by the arc from the exhaust port to people or surrounding equipment is often ignored. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): H01H71/02H01H73/18
CPCH01H71/02H01H73/18
Inventor 朱俊李杰单军
Owner ZHEJIANG CHINT ELECTRIC CO LTD
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