Molded case circuit breaker

By adopting a new layout structure, stacking design and space optimization in the plastic-shell circuit breaker, the problem of insufficient compactness of the existing circuit breaker is solved, and the size reduction and safety performance improvement of the circuit breaker are achieved.

CN222672925UActive Publication Date: 2025-03-25ZHEJIANG TENGEN ELECTRIC
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Patent Information

Application Number
CN202420874129.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-25
Publication Date
2025-03-25
Estimated Expiration
2034-04-25

AI Technical Summary

Technical Problem

The existing plastic shell circuit breakers have insufficient compactness in structural layout, which is difficult to meet users' high requirements for product size.

Method used

Adopting a new layout structure, the base, the cover body, and the upper cover are stacked in sequence in the height direction, the arc extinguishing structure, the contact system, and the transformer are arranged in the first space, the operating mechanism and the magnetic flux tripper assembly are arranged in the second space, and the first wiring member and the second wiring member are located below the base and are connected to the contact system.

Benefits of technology

Through this layout structure, the length dimension of the circuit breaker is reduced, the product structure is more compact, and the operating mechanism is away from the strong electric part, improving safety performance.

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Abstract

The utility model discloses a molded case circuit breaker, which comprises a base, a cover body, an upper cover, an operating mechanism, a contact system, a mutual inductor and an arc extinguishing structure, the device further comprises a magnetic flux release assembly, a first wiring piece and a second wiring piece. The base, the cover body and the upper cover are sequentially stacked in the height direction, a first space is formed between the cover body and the base, and a second space is formed between the upper cover and the cover body; the arc extinguishing structure, the contact system and the mutual inductor are all arranged in the first space; the operating mechanism and the magnetic flux release assembly are arranged in the second space; in the height direction, the first wiring piece and the second wiring piece are both located below the base, and the first wiring piece and the second wiring piece are both connected with the contact system; the device has the advantage of being compact in structure.
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