A plug-in circuit breaker

By using a parallel-connected circuit breaker pole structure and built-in lightning protection and electrical operation modules, the plug-in circuit breaker achieves simplified manufacturing, stable operation, and intelligent control, solving the problems of complex manufacturing, high operating force, and difficult assembly of lightning protection modules in existing technologies.

CN115547769BActive Publication Date: 2026-06-02ZHEJIANG CHINT ELECTRIC CO LTD
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Patent Information

Application Number
CN202110725113.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-06-29
Publication Date
2026-06-02
Estimated Expiration
2041-06-29

AI Technical Summary

Technical Problem

Existing plug-in circuit breakers have problems such as complex manufacturing process, high cost, large operating force, lack of lightning protection function and inability to be operated remotely.

Method used

It adopts a parallel-connected circuit breaker pole structure, with an operating mechanism and an electric control module on the active pole. The contact mechanism is linked, and it has a built-in lightning protection module and arc extinguishing device, which simplifies the manufacturing process. It is equipped with a current transformer and an overcurrent protection mechanism to achieve automatic opening and closing and remote control.

Benefits of technology

It reduces the manufacturing cost of circuit breakers, improves operational stability and reliability, simplifies the assembly and disassembly of lightning protection modules, and meets the intelligent requirements of circuit breakers.

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Abstract

The application discloses a plug-in circuit breaker, which comprises at least two circuit breaker poles arranged in parallel and spliced, two ends of each circuit breaker pole are respectively used as a first wiring end and a second wiring end, a contact mechanism is arranged between the first wiring end and the second wiring end, the contact mechanism comprises a movable contact and a static contact matched with each other, movable contacts of the at least two circuit breaker poles are connected in linkage, one of the circuit breaker poles is used as a main movable pole, and the rest of the circuit breaker poles are used as driven poles, an operating member is arranged at the first wiring end of the main movable pole, an operating mechanism is connected in linkage between the operating member and the contact mechanism of the main movable pole, and the movable contact of the main movable pole is driven by the operating mechanism, and the movable contact of the driven pole is driven by the movable contact of the main movable pole when the circuit breaker is switched on and off.
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