The so-called fuse is a kind of electrical appliance in which the current exceeds the specified value and makes the melt fuse with the heat generated by itself. Fuse is divided into high voltage fuse and low voltage fuse, mainly used in distribution system and control system and electrical equipment, car low voltage fuse application voltage generally below 60VDC, mainly electronic fuse for car low voltage load protection, such as lights, window motor, wiper motor, horn such protection in traditional vehicles and new energy vehicles are applied. High voltage protection is mainly suitable for new energy vehicles, the application voltage is generally 60VDC-1500VDC, mainly high voltage fuse to protect the main loop and auxiliary loop, while TF10BN / TF16VN / TF16SN / TF16AT series model low voltage fuse is more, the rated voltage is 32~125V.
Working principle and selection of KOA fuses
The working principle of KOA fuse is that when the current flows through the fuse, heat will be generated due to the effect of resistance. If the heat generated exceeds the heat dissipation speed of the fuse, it will cause the temperature of the fuse to rise. When the temperature reaches the melting point of the fuse, the fuse will fuse, thus cutting off the circuit. When choosing vehicle fuse, try to choose the rated voltage is greater than the maximum voltage of the circuit fuse, specific need to choose according to the fuse rated current and power load current, according to the different types of load need to choose different types of fuse, such as LED light perceptual load need to choose slow type fuse, to avoid impact on the circuit. Finally, according to the external size of the fuse, the installation method, etc.