Plug-in circuit breaker

Abstract

The invention relates to a plug-in circuit breaker which comprises a shell, a wire inlet and outlet mechanism, a manual operation mechanism, an electric operation mechanism, a contact action mechanism and an overload and short circuit protection mechanism, the manual operation mechanism comprises a manual handle, a display mechanism and a locking mechanism, and the electric operation mechanism comprises a closing motor, an opening electromagnet and a PCB control panel. The plug-in circuit breaker has the advantages that the degree of standardization is high, the number of universal parts is large, the production cost is saved, the use and maintenance of a user are facilitated, meanwhile, multiple technologies such as a wire outlet mechanism are adopted, a wire pressing plate can exert upward pressure on an external wire and can exert reverse force for preventing the external wire from sliding out so that the external wire can not fall off easily, due to the design of the manual handle, the opening and closing display mechanism and the locking mechanism are simple in structure and reliable in work, closing and opening are systematic and do not interfere with each other in the electric operation mechanism, and electromagnetic trips with different current specifications are selected in short circuit protection, so that the short circuit protection performance of the circuit breaker is improved.

Description

technical field [0001] The invention relates to a low-voltage electrical appliance, in particular to a plug-in circuit breaker. Background technique [0002] With the rapid development of my country's electric power and communication technology, higher and higher requirements are put forward for the practicability, safety and reliability of terminal electrical equipment such as circuit breakers. Traditional circuit breakers are far from meeting these requirements. In the development of research and development, my country's circuit breakers have not only reached a new level in terms of miniaturization, intelligence, and reliability, but also have many new designs in structure. The circuit breaker can be easily installed or withdrawn from the circuit, and can be locked in a stable working state at the installation position. At the same time, it can adapt to various requirements of intelligent power quality and automatic control. This kind of circuit breaker is called plug-in ty...

AI Technical Summary

Problems solved by technology

[0003] At present, the design and use of plug-in circuit breakers in my country are still being explored, and the structure and performance are still insufficient. For example, the degree of labeling of parts is not high, the working performance is not stable, and the variety cannot adapt to the development of use. requirements

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