7100.1123.95

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fuses

7100.1123.95 application field and working principle is a classification scheme that describes the functionality of a variety of fuses in an organized and comprehensive manner. Fuses are used as safety devices in residential, industrial, and automotive equipment and are essential components in the protection of electrical equipment from current overload and short circuits. These devices are unique in their ability to open an electrical circuit in order to protect the equipment from damage due to an overload or short circuit. The type of fuse and its characteristics are determined by the application in which it will be used.

Types of Fuses

Fuses are classified by their application, voltage, amperage, interrupting, ability and time/current characteristics. The type of fuse to be used in a particular application depends primarily on the voltage, amperage and interrupting ability of the device. Generally, the higher the voltage or amperage rating, the larger and heavier the fuse. The interrupting rating of a fuse is a measure of the maximum amount of current the fuse is able to safely interrupt without sustaining damage.

• Residential fuses are typically low-voltage, low-amperage units designed to protect circuits within a home or dwelling. These units are generally wired into a circuit in series, typically rated for 120 volts and up to 10 or 15 amps.
• Industrial fuses are typically medium-voltage, medium-amperage units designed to protect industrial equipment. These units are generally wired into a circuit in series, typically rated for 480 volts and up to 30 or 50 amps.
• Automotive fuses are typically high-voltage, high-amperage units designed to protect automotive circuits. These units are generally wired into a fuse box in parallel, typically rated for 12 volts and up to 200 amps.

Working Principles of Fuses

A fuse is a protective device that typically consists of a fusible element enclosed in a non-flammable casing. In its most basic form, a fuse is nothing more than a piece of wire or filament that melts (“blows”) when too much current passes through it. During normal operation, current flows through the fuse without any effect. When there is an unexpected surge of current, the wire or filament melts, interrupting the flow of current and thereby “blowing” the fuse.

Not all fuses employ the same type of fusible element. Different types of fuses employ various methods for detecting an overcurrent, such as bimetallic strips, reed switches, semiconductor devices, and ceramic bodies. The type of fusible element used is dictated by the application in which the fuse is being used and the desired characteristics of the fuse.

Characteristics of Fuses

Fuses are categorized in several different ways to better describe their characteristics. These include voltage and amperage ratings, interrupting rating, time/current characteristics, and construction quality. Voltage ratings typically range from a few volts to tens of kilovolts, whereas ampere ratings are typically measured in a few amperes to hundreds of amperes. Interrupting rating is a measure of the maximum amount of current a fuse can safely handle without burning open. Time/current characteristics of a fuse are those characteristics that indicate the speed with which a fuse will open under various overload conditions.

Conclusion

Fuses are essential components to the protection of electrical equipment from current overload and short circuits. They are categorized by their application, voltage, amperage, interrupting ability and time/current characteristics. Fuses typically have fusible elements enclosed in a non-flammable casing that melts (“blows”) when too much current passes through it. Understanding the different types of fuses and the characteristics of each is essential when selecting the correct fuse for the application.

The specific data is subject to PDF, and the above content is for reference