a small circuit breaker

Abstract

The invention provides a small-size circuit breaker, and belongs to the technical field of an electrical component. By the small-size circuit breaker, the problem of excessive large noise during operation of an existing small-size circuit breaker is solved. The small-size circuit breaker comprises a shell, a contact mechanism, an arc extinguishing system, an operating mechanism and a magnetic tripmechanism, wherein the magnetic trip mechanism comprises a connection plate, a magnetic yoke, an iron core, a coil, a bimetal component, an armature and a jump pin, the iron core is fixedly connectedto the magnetic yoke, the coil is wound the iron core, one end of the coil is connected with the contact mechanism, the other end of the coil is fixedly connected to the magnetic yoke, the connectionplate is fixedly connected with the magnetic yoke, and the armature is connected to the magnetic yoke. A beating structure which the armature and the iron core are matched is employed, the small-sizecircuit breaker is simple in structure and relatively long in service lifetime and is convenient to maintain and adjust, and no noise and moving is generated.

Description

technical field [0001] The invention belongs to the technical field of electrical components and relates to a small circuit breaker. Background technique [0002] Miniature circuit breakers, also known as miniature circuit breakers, are used in various places such as industry, commerce, high-rise buildings and residential buildings to cut off and connect load circuits, and cut off faulty circuits to prevent accidents from expanding to ensure safe operation of load circuits. The structure of miniature circuit breaker mainly includes housing, contact mechanism, arc extinguishing system, operating mechanism and magnetic tripping mechanism. The arc extinguishing system includes arc extinguishing chamber, which is equipped with arc extinguishing grid, arc extinguishing cover and The operating mechanism includes the operating handle, the main bracket, the linkage assembly and the lock assembly; the magnetic tripping mechanism includes the iron core, the coil and the yoke. It is n...

AI Technical Summary

Problems solved by technology

The structure of miniature circuit breaker mainly includes housing, contact mechanism, arc extinguishing system, operating mechanism and magnetic tripping mechanism. The arc extinguishing system includes arc extinguishing chamber, which is equipped with arc extinguishing grid, arc extinguishing cover and The operating mechanism includes the operating handle, the main bracket, the linkage assembly and the lock assembly; the magnetic tripping mechanism includes the iron core, the coil and the yoke. Noisy and difficult to adjust

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