Automatic partition type arc extinguishing shell for circuit breaker

Abstract

The invention discloses an automatic partition type arc extinguishing shell for a circuit breaker. The automatic partition type arc extinguishing shell comprises a base, a shell body, a shell cover and a push button, the shell body is fixedly connected to the top of the base, an electricity inlet buckle is fixedly connected to the bottom of the right end of the shell body, and an electricity outlet buckle is fixedly connected to the bottom of the left end of the shell body; and the right end of the electricity outlet buckle is rotatably connected with a brake block through a torsional spring rotating shaft, and the right side of the interior of the shell is fixedly connected with an insulating frame. According to the invention, firstly, an automatic partition type arc extinguishing structure is adopted, insulation partition processing can be carried out between the contacts when the circuit breaker is opened or closed, and the generation of electric arcs when the contacts are opened orclosed is reduced, so that the phenomena of damage to the contacts of the circuit breaker and high-temperature burnout of the contacts of the circuit breaker are reduced; secondly, a combined installation structure is adopted, the installation processing between the shell cover and the shell body is facilitated, and the convenience of the installation and disassembly operation of the circuit breaker is improved, thereby facilitating the early-stage processing and manufacturing and later-stage disassembly and maintenance of the circuit breaker.

Description

technical field

[0001] The invention relates to the technical field of circuit breaker components, in particular to an automatic cut-off arc extinguishing housing for a circuit breaker. Background technique

[0002] A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. However, there are still deficiencies in the existing circuit breaker housings: most of them are not equipped with automatic arc extinguishing structures, it is difficult to isolate the contacts when the circuit breaker is opened or closed, and arcs are likely to occur when the contacts ar...

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