The fusewas invented by Edison more than 100 years ago to protect the expensive incandescent lamp. With the development of The Times, fuses protect electrical equipment from the current overheating injury, avoid electronic equipment due to internal failure caused by serious injury.
When electric current flows through a conductor, the conductor will heat up because there is a certain resistance. The current and resistance determine the rate at which heat is generated, and the construction of the fuse and its installation determine the rate at which heat is consumed. If the rate of heat generation is equal to the rate of heat dissipation, it will not fuse for a long time. If the rate at which heat is produced is greater than the rate at which it is dissipated, more and more heat will be produced. When the temperature rises above the fuse’s solubility the DC fuse is sent off. This is how a DC fuse works.
The general fuse consists of three parts: one is the melt part, which is the core of the fuse. The second is the electrode part, usually there are two, it is an important part of the melt and the circuit connection, and it must have good electrical conductivity. The third part is the bracket. The fuse melt is usually thin and soft, and the function of the bracket is to hold the melt in place and make the three parts into a rigid whole for easy installation and use.
GENERAL INFORMATION l Two-pole/ Three pole/ Four pole varistor surge protective device (AC SPD) l Combined SPD Type 1&2 with MOV and CDGG technology for use in different power system. l Visual indication and optional remote contact signaling(S), capable of protecting Terminal equipment. l Non-follow current. l The Prewired complete unit consisting of a base […]
A SPD must always be installed at the origin of the electrical installation. Location and type of SPD The type of SPD to be installed at the origin of the installation depends on whether or not a lightning protection system is present. If the building is fitted with a lightning protection system (as per IEC […]
DC SPD applied to the Din rail type protects the DC electric system from surge. Also, the system allows replacement of the protective element (MOV), ensuring convenience and reduced cost. However, as only the protective module is provided, other components should be added when the system is installed in accordance with the site condition.
We focus on providing high-quality equipment and components to meet the needs of customers around the world.
