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Fuses

Fuses are passive electrical devices that act as safety mechanisms designed to protect electrical circuits, components, and equipment from possible overloads caused by short-circuits and excessive currents. There are numerous types of fuses, such as Current Limiters, Inverse Time Delay Fuses, and Combined Types, which vary in the manner in which they function and in their rating and application.

The 5SCLE-150E, a form of fuse, is a current-limiting, inverse time-delay device. It is designed to provide reliable short-circuit protection for medium and low voltage applications. Its optimum rating is 150 amps, and with its relatively small standard package size, the 5SCLE-150E is suitable for use in housed and industrial equipment.

Application fields

The 5SCLE-150E is primarily used in medium-and-low-voltage AC power distribution circuits, but it is also a suitable choice in a variety of applications, such as in the control and protection of motors, transformers, switchgear, capacitors, bus-bars, cables, and for overload and short-circuit protection.

The 5SCLE-150E is also an ideal choice when used in internal wiring of electronic equipment, in industrial control equipment, in household and chemical plant electronic appliances, and in other electrical products.

Working Principle

The 5SCLE-150E fuse consists of a fuse element made from high-temperature alloy wires placed in a rectangular metal envelope. The envelope, or casing, carries two terminals designed to meet the electrical requirements of the application. When an overload occurs, an arc is established between the terminals and the alloy wires fuse, thus breaking the circuit.

The 5SCLE-150E is designed so that the current-limiting technology and inverse time delay work in tandem to help reduce the magnitude of an overload current, thereby minimizing fault levels and allowing greater protection of the device in which the 5SCLE-150E is installed.

The current-limiting operation of the 5SCLE-150E will limit the current below the blown level, thereby minimizing fault levels. The inverse time-delay feature means that the fuse will take longer to blow if the overload current is sufficiently small, allowing greater protection against mildly excessive currents often seen in many applications.

Summary

The 5SCLE-150E is a current-limiting, inverse time-delay fuse designed for use in medium and low voltage applications. It is used in power distribution circuits, motor, and transformer control and protection, internal wiring of electronic equipment, industrial control equipment, household appliances, chemical plant electronic appliances, and other electrical products. The 5SCLE-150E has two terminals and works in tandem with current-limiting technology and inverse time delay to help reduce overloads and provide greater protection.

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