Intelligent fuse

By setting a pre-break and parallel first and second arc-extinguishing modules in the fuse, combined with the actuator and control module, precise interruption of different currents can be achieved, solving the problem that existing fuses cannot provide full-range protection under high rated current, and realizing fast and effective current interruption.

CN224384239UActive Publication Date: 2026-06-19COOPER XIAN FUSE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
COOPER XIAN FUSE
Filing Date
2026-03-30
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing fuses, under high rated current and voltage requirements, cannot effectively interrupt small overload currents or have excessively long melting times during short circuits, thus failing to provide full-range protection for electronic components in the circuit.

Method used

A main circuit with a pre-break is adopted, with first and second arc-extinguishing modules connected in parallel. The first arc-extinguishing module is turned on or off by an actuator. Combined with the control module to adjust the current and time, different currents are interrupted, including currents greater than and less than the threshold current, which are handled by different arc-extinguishing modules.

Benefits of technology

It achieves full-range interruption, reduces the interruption time and fusing energy of overload and short-circuit currents, protects electronic devices, and has an active disconnection function.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224384239U_ABST
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Abstract

Provided is an intelligent fuse, comprising: a main circuit with a pre-breaking point; at least one first arc extinguishing module in parallel with the main circuit, for breaking and arc extinguishing of a main circuit current greater than a threshold value, each first arc extinguishing module comprising a first fuse; a second arc extinguishing module, for arc extinguishing of a main circuit current less than the threshold value; and an execution element, for controlling the turn-on or turn-off of the at least one first arc extinguishing module. By arranging the first arc extinguishing module and the second arc extinguishing module, by controlling the turn-off of the main circuit or the arc extinguishing module, the triggering current and time are adjustable, the breaking time of an overload and short-circuit current is reduced, the fusing energy of the overload and short-circuit current is reduced, full-range breaking is achieved, components are protected, and active cutting-off protection is also available in abnormal conditions.
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