1.Fuse Cutout, also called Dropout fuse, is an electrical device that disconnects a circuit by causing the fuses to melt with its own heat when the current exceeds a specified value. A fuse disconnects a circuit by melting it with its own heat after the current exceeds the specified value for a certain period of time. Fuse Cutout is an electric current protector made using this principle.
Fuse Cutouts are widely used in high and low voltage distribution systems and control systems as well as electrical equipment, as short circuit and overcurrent protector, is one of the most widely used protection devices.
2.Fuse cutout consists of three main parts:
THE FUSE CUTOUT BODY, a porcelain or a polymer insulator body that isolates the conductive portion from the supports to which the insulator is fastened.
THE FUSE HOLDER, also called the insulating fuse tube, it contains the replaceable fuse elements inside. when the contained fuse melts, it disconnects the circuit, and the fuse holder drops and hangs from a hinge on its lower end. This hanging fuse holder indicates that the fuse has melted and that the circuit has disconnect. The circuit can also be disconnect manually by linemen using the hot stick.The fuse holder may be replaced by a solid blade, which would allow the fuse holder assembly to be used as a switch only.
THE FUSE LINK, also is the fuse elements. is the replaceable portion of the fuse cutout that will melt and diconnect the circuit with its own heat when there is overcurrent went through it.