Micro circuit breaker

Abstract

The invention provides a micro circuit breaker. The micro circuit breaker comprises a conductive part which is arranged between a static contact and a bimetallic strip and can be connected with the static contact and the bimetallic strip, the conductive part is provided with a flexible conductive section which can be connected with the bimetallic strip and a moving contact plate which is integrally connected with the flexible conductive section, and the moving contact plate is formed into a plate shape by pressing one part of the same flexible conductor where the flexible conductive section islocated. Namely, one part of the flexible conductor is used for being pressed into a moving contact plate, and the other part is directly connected with a bimetallic strip. The micro circuit breakeris advantaged in that compared with the mode that in the prior art, the moving contact is stamped on the copper plate firstly, then the moving contact is connected with the flexible conductive part ina welded mode, the processing procedure is simpler, production cost is reduced, defects of pseudo soldering, high temperature rise and the like caused by welding are overcome, reliability is higher,and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a small circuit breaker. Background technique [0002] Miniature circuit breakers refer to protective appliances installed on terminal distribution lines, which are mainly used for overload and short-circuit protection of lines and electrical equipment. [0003] The contact mechanism of the existing miniature circuit breaker includes a moving contact 01 arranged on the contact bracket 04, and a static contact arranged opposite to the moving contact 01. The moving contact 01 rotates in conjunction with the contact bracket 04, thereby The static contacts are connected or disconnected, such as Figure 7 As shown, the moving contact 01 is connected to the bimetal sheet 03 through the flexible conductive part 02. At present, the moving contact 01 is stamped and formed by copper plate, and the flexible conductive part 02 is generally a copper braid or copper flexible stranded ...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the moving contact and the flexible conductive member are connected by welding, resulting in high production cost, virtual welding, and temperature rise at the solder joint, thereby providing A small circuit breaker with low production cost and high reliability

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