Leakage protection system of switching device and circuit breaker

Abstract

The invention provides a leakage protection system of a switching device and a circuit breaker, and the system comprises: a housing which is internally provided with a partition plate to divide an inner cavity of the housing into a first assembly cavity and a second assembly cavity which are arranged side by side; an L-pole circuit breaking module which is mounted in the first assembly cavity and comprises a handle, an L-pole movable contact frame, a jump pin and a lock catch; the jump pin is pivoted on the L-pole movable contact frame and is in linkage fit with the handle; the lock catch is pivoted on the L-pole movable contact frame in a resettable manner and is in buckling fit with the jump pin; and an electric leakage protection module which is installed in the second assembly cavity and comprises an electric leakage release, an unlocking lever and an N-pole movable contact frame, wherein the unlocking lever and the N-pole movable contact frame are coaxially pivoted to the shell, one side of the unlocking lever is connected to the electric leakage release, and the other side of the unlocking lever is provided with an unlocking part extending transversely. The N-pole movable contact frame and the L-pole movable contact frame are connected through a linkage shaft penetrating through the linkage avoiding hole so as to synchronously swing. The mechanism is more compact in structure, smaller in size and more reliable in linkage.

Description

technical field [0001] The invention relates to the technical field of switching appliances, in particular to a leakage protection system and a circuit breaker of switching appliances. Background technique [0002] Leakage circuit breakers are widely used in industrial, commercial, residential and other fields. When there is a leakage in the line, it can quickly cut off the faulty power supply in a very short time to protect the safety of people and electrical equipment. [0003] In the prior art, a leakage circuit breaker is generally equipped with a test button and a test circuit, and a leakage circuit is added to test the effectiveness of tripping. However, the leakage protection and testing structure of the leakage circuit breaker involves many parts, the layout is relatively complicated, the assembly is difficult, and the compactness is not high. Contents of the invention [0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to ...

AI Technical Summary

Problems solved by technology

However, the leakage protection and test structure of the leakage circuit breaker involve many parts, the layout is complicated, the assembly is difficult, and the compactness is not high.

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