Modularized automatic reclosing miniature circuit breaker

Abstract

The invention relates to a modularized automatic reclosing miniature circuit breaker. The miniature circuit breaker comprises a circuit breaker unit and an automatic reclosing device, the circuit breaker unit comprises an N-line switch module, a plurality of L-line switch modules and a leakage protection metering module, and the leakage protection metering module comprises a shell and a leakage protection metering assembly. The electric leakage protection metering assembly comprises an electric leakage protection circuit board, a plurality of conductive tubes, a zero sequence mutual inductor which is electrically connected with the electric leakage protection circuit board and sleeves the plurality of conductive tubes, a plurality of conductive plates, a plurality of straight-through tubes, a plurality of current transformers, a plurality of conductive sheets which are connected with the plurality of straight-through tubes, and a plurality of wiring terminals which are connected with the plurality of conductive sheets. And one ends of the plurality of conductive tubes are respectively connected to the N-line switch module and the plurality of L-line switch modules, so that the plurality of conductive tubes are electrically connected with the N-line switch module and the plurality of L-line switch modules. The miniature circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenient assembly and low cost.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a small circuit breaker with automatic reclosing. Background technique [0002] At present, miniature circuit breakers are widely used in low-voltage distribution networks, mainly in various places such as industry, commerce, high-rise buildings and residential buildings, and can provide overcurrent protection and leakage protection for electrical equipment such as motors, distribution lines, and lighting circuits. Protect. The opening and closing actions of traditional miniature circuit breakers need to be completed manually. With the development of my country's smart grid, under the premise of requiring the safe operation of the grid, it is more and more urgent to realize the intelligent control of electrical appliances. In order to cope with new situation changes, the existing miniature circuit breaker should have automatic reclosing function. The electric operatin...

AI Technical Summary

Problems solved by technology

The structure design of the existing automatic reclosing miniature circuit breaker is unreasonable, modular assembly cannot be realized, the assembly is cumbersome, the production efficiency is low, and the cost is high, so the automatic reclosing miniature circuit breaker has complex structure, large volume and unreliable performance. , inconvenient assembly and high cost

Images