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A small size circuit breaker

A circuit breaker, small-sized technology, applied in the direction of circuit breaker components, switches with electric heating and electromagnetic release, etc., can solve the problems of large overall outer diameter, large thickness of layout space, and large number of coils, etc., to achieve improved breaking capacity, reduced material management costs, and quick tripping response

Active Publication Date: 2019-07-12
SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The circuit breaker is a modular terminal protection device. The thickness of the circuit breaker with small current specifications is 18mm, especially the magnetic protection system with a specification below 6A requires a large number of coils and a large overall outer diameter, resulting in a large thickness of the overall layout space. , it is difficult to meet the functional requirements of instantaneous tripping characteristics at a modulus width of 9mm

Method used

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  • A small size circuit breaker
  • A small size circuit breaker
  • A small size circuit breaker

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Embodiment Construction

[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042]A small-volume circuit breaker, comprising a first circuit breaker unit 31 and a second circuit breaker unit 32 stacked in layers, the housing 1 of the first circuit breaker unit 31 is provided with a first protrusion 33 and a first recess 34, the housing 1 of the second circuit breaker unit 32 is provided with a second concave part 35 and a second protruding part 36; the first circuit breaker unit 31 contains a first magnetic tripping system, and the first magnetic tripping The position of the system corresponds to the position of the first protrusion 33; the second circuit breaker unit 32 contains a second magnetic trip system whose position corresponds to the position of the second pro...

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Abstract

The invention discloses a small volume breaker, including a first breaker unit (31) and a second breaker unit (32) arranged in a stacked manner. A housing of the first breaker unit (31) is provided with a first projection portion (33) and a first concave portion (34). A housing of the second breaker unit (32) is provided with a second concave portion (35) and a second projection portion (36). Thefirst projection portion (33) and the second concave portion (35) are plugged in a matched manner. The first concave portion (34) and the second projection portion (36) are plugged in a matched manner. The small volume breaker is small in volume, length is not longer than 80 mm, monopole modulus thickness is 9 mm, and thickness of only coil part is 12 mm. However, after poles are spliced, breakercoil projection portions would be assembled in the concave portion of another pole. Total width is 9 mm x (the number of poles) + 3 mm. The breaker saves space, and saves materials by more than 40%. The breaker is advantaged by high operation reliability, simple structure, and low cost.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a small-volume circuit breaker. Background technique [0002] With the development of urban and rural power grids, the capacity of power transmission and distribution systems continues to increase, and the degree of system integration continues to increase, which puts forward higher requirements for the performance of circuit breakers. At the same time, there are more and more loops that need centralized control in the power grid. In order to facilitate management and maximize the number of control loops in a unit space, that is, to improve the space utilization rate of protective appliances, the only way to reduce the size of protective appliances is to increase the existing complete set. The number of circuit breakers placed in the switch cabinet. At the same time, the miniaturization of circuit breakers can also save materials and reduce manufacturin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/06H01H73/50H01H73/18
CPCH01H73/06H01H73/18H01H73/50
Inventor 南寅南添邓艺军南张如
Owner SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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