Small-size economic surge protector with early warning

CN224401149UActive Publication Date: 2026-06-23GUILIN ZHIMIN ELECTRONIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUILIN ZHIMIN ELECTRONIC TECH CO LTD
Filing Date
2025-07-29
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In existing technologies, the varistor of a surge protector (SPD) in a conventional single-phase circuit is thick, which affects the size of the surge protector and makes it difficult to quickly determine its protection function when the varistor experiences abnormal overvoltage.

Method used

Three varistors are connected in a star configuration, forming a phase protection for every two varistors. It is equipped with a temperature fuse and an indicator power circuit. The protection function can be quickly determined by the cooperation of the temperature fuse and the indicator power circuit. The casing is encapsulated with flame-retardant material.

Benefits of technology

The thickness of a single varistor is reduced, thus decreasing the size of the surge protector. At the same time, it can quickly determine the protection function in abnormal situations, preventing the product from catching fire.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a small economic surge protector with early warning, including first pressure -sensitive resistance, second pressure -sensitive resistance, third pressure -sensitive resistance, fourth electrode piece and fifth electrode piece, and first electrode piece is fixedly arranged on first pressure -sensitive resistance, and first electrode piece is electrically connected with first pressure -sensitive resistance, second electrode piece is fixedly arranged on second pressure -sensitive resistance, and second electrode piece is electrically connected with second pressure -sensitive resistance, third electrode piece is fixedly arranged on third pressure -sensitive resistance, and third electrode piece is electrically connected with third pressure -sensitive resistance, and the both ends of fourth electrode piece are electrically connected with first pressure -sensitive resistance and second pressure -sensitive resistance respectively, and the both ends of fifth electrode piece are electrically connected with fourth electrode piece and third pressure -sensitive resistance respectively, compared with prior art, the utility model can reduce the thickness of single pressure -sensitive resistance, thereby make surge protector volume reduce, more convenient installation while more economical.
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