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
CN108447747BActive Publication Date: 2019-07-12SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
Publication Date
2019-07-12

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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.
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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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