Drop-out Fuses Provide A Clearly Visible Point Of Failure.

Outdoor-installed type fuse drop out fuses have a fuse wire placed inside a fuse tube and connected to the circuit via moving and stationary contacts. Under normal power supply, the fuse wire remains taut, closing the circuit. In the event of an overcurrent or short circuit, the fuse wire melts rapidly, and the internal arc-extinguishing tube generates a large amount of gas, extinguishing the arc. Subsequently, under the influence of gravity and spring force, the fuse tube "falls down," creating a clearly visible disconnected position.

Type ht drop out fuse fuses are suitable for outdoor power distribution lines and the primary side of distribution transformers, commonly used in 10kV systems. Their structure consists of an insulating support, fuse tube, moving and stationary contacts, and arc-extinguishing device, and their design meets relevant national standards and specifications.