Fuse for power distribution system

Abstract

The invention relates to the technical field of electrical equipment, and discloses a fuse for a power distribution system, which comprises a porcelain bushing, the top end of the porcelain bushing is fixedly connected with an upper fixing seat, an inlet wire is arranged in the upper fixing seat, the side wall of one side below the porcelain bushing is fixedly connected with a lower fixing seat, and an outlet wire is arranged in the lower fixing seat. And the bottom end of the upper fixed seat located in the upper fixed seat is fixedly connected with an upper contact seat. The fusion tube is divided into the upper fusion tube and the lower fusion tube, the upper fusion tube and the lower fusion tube are both movably sleeved with the arc extinguishing tube, one end of the upper fusion tube is fixedly connected with the upper conductive block, one end of the lower fusion tube is fixedly connected with the lower conductive block, and the fuse wire penetrates through the upper conductive block, the upper fusion tube, the lower fusion tube and the lower conductive block and is fixed through the fixing ball. Therefore, the fuse is simply and rapidly installed in the arc extinguishing tube, time and labor are saved, the fuse is always kept in a linear state in the installation process, the fuse is effectively protected from being bent and rubbed, and the integrity and functionality of the fuse are enhanced.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a fuse used in a power distribution system. Background technique [0002] Fuse refers to an electrical appliance that fuses the melt and disconnects the circuit with the heat generated by itself when the current exceeds the specified value. Fuse is widely used in high and low voltage power distribution systems, control systems and electrical equipment as a short circuit And overcurrent protectors are one of the most commonly used protection devices. [0003] There is a fully insulated injection fuse disclosed on the market, which includes a fuse tube. The middle part of the fuse tube is a hollow cavity, and a fuse is arranged in the hollow cavity. The fuse distribution is connected to the inlet line and the outlet line through the upper and lower contact seats. , which uses the fuse itself to fuse to form an arc, and then under the high temperature of the arc, the s...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the use of existing fuses proposed in the background technology, the present invention provides a fuse for power distribution systems, which has the advantages of convenient assembly of the fuse and effective protection of the fuse from damage, and solves the problem of Solved the technical problems raised in the above-mentioned background technology

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