- 2025-05-07
How Surge Protectors Work
In modern society, electronic devices are almost everywhere. From home appliances to office computers, from communication systems to industrial equipment, they all rely on a stable power supply.
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Zhejiang Zhenghao Fuse Co., Ltd. is a professional manufacturing company specialized in fuse products for more than 30 years. We started our business from 1985 with the name of Yueqing Zhenghao Fuse Co., ltd, mainly manufacturing low-voltage fuse products.
The company is located in Liushi Town - "the Capital of Electricity of China", in Yueqing City, Zhejiang Province. With over 20 years of history, we have developed more than 12 series products, including more than 400 varieties, such as cylindrical fuse links, screw fuse base, square pipe fuse links with knife contacts, fuse selection handbook and so on. The registered trademark of our products is ZHENGRONG, a well-known and trustworthy brand in extensive customers. We have got ISO900 approval, CE as well as CCC on many products.
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40 years of industry experience, specializing in the production of fuse products
In modern society, electronic devices are almost everywhere. From home appliances to office computers, from communication systems to industrial equipment, they all rely on a stable power supply.
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View MoreIn modern electrical systems, fuses play an indispensable role as an important component to protect circuit safety.
View MoreFrom April 15 to 19, 2025, the 137th China Import and Export Fair (Canton Fair) opened grandly in Zhuhai, Guangzhou. As a leading manufacturer of circuit protection equipment, Zhejiang Zhenghao Fuse brought a variety of high-performance fuses and intelligent solutions to the booth number: [15.2J0102] to empower the power safety field with innovative technology, attracting high attention from merchants at home and abroad.
View MoreChoose a suitable fuse : When choosing a fuse, you should choose an appropriate current rating according to actual needs. Usually, the fuse's fusing current is set to 1.5 to 2.0 times its rated current. For example, when the total power of household appliances exceeds 1100 watts, a 5-ampere fuse can be selected.
View MoreThe material selection of fuses is directly related to their protection performance. Low melting point alloys (such as lead-antimony alloys) are the most commonly used core materials, while glass, ceramics, aluminum alloys and organic composite materials provide diversified solutions according to specific application scenarios.
View MoreThe working principle of fuse is mainly based on the thermal effect of current and the physical properties of metal conductor expansion due to heat.
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