A multi-breakpoint built-in connection DC circuit breaker

Abstract

Provided is a multi-breakpoint built-in connection direct-current circuit breaker. The invention mainly aims to solve the problem that because series wiring of the existing multi-breakpoint built-in connection direct-current circuit breaker is often carried out at an external wiring terminal of the circuit breaker to make two or more poles of the circuit breaker connected in series into a series connection breakpoint, users cannot use the circuit breaker conveniently, and the occupied space is large. The multi-breakpoint built-in connection direct-current circuit breaker is characterized in that the bottom of each fastening screw passes through a base and each fastening screw is equipped with a matching fastener; the bottom of the base is provided with a mounting cavity; a series connection plate is arranged between the top inner wall of the mounting cavity and the fasteners; and the two ends of the series connection plate are respectively connected with the adjacent fastening screws. The invention provides a multi-breakpoint built-in connection direct-current circuit breaker which adopts an internal connection mode. The series connection plate is adopted for connection at the bottom of a wiring terminal of the circuit breaker to make two or more poles of the circuit breaker connected in series into a series connection breakpoint, and the shape of a conductor for connection does not move out of the shell of the circuit breaker. The multi-breakpoint built-in connection direct-current circuit breaker has the advantages of compact structure, convenient use and less space occupation.

Description

technical field [0001] The invention belongs to the field of direct current circuit breakers, in particular to a multi-breakpoint built-in connection direct current circuit breaker. Background technique [0002] With the development of new energy technology, higher requirements are put forward for low-voltage electrical components. Especially with the continuous development and expansion of photovoltaic power plants, the performance indicators of the protection components required by the power plants have higher requirements. For example, in the photovoltaic power DC system, the rated operating voltage of low-voltage electrical appliances is as high as DC1000V. The breaking performance of the circuit breaker can be improved by adopting the wiring method of multiple breakpoints in series. In this regard, many manufacturers at home and abroad have also introduced various circuit breaker wiring application schemes. The breaking performance of the circuit breaker can be impro...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the background technology, the present invention provides a multi-breakpoint built-in connection DC circuit breaker, which mainly solves the problem that the existing multi-breakpoint built-in connection DC circuit breaker is usually connected in series at the external terminal of the circuit breaker. Two or more poles of the circuit breaker are connected in series to form a series breakpoint, which is inconvenient for users and takes up a lot of space

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