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

In the modern electrical industry, fuses play a much more important role than in the past. To many engineers and technicians, the fuse is a vital part of the electrical system and must be properly understood and applied. Although fuses have been commonly used since the early 19th century, advances in electronic technology and materials have led to improved designs and types.

5TT 5 Application Fields and Working Principle

Fuses are mainly divided into two categories, the AC-rated fuse (ACF) and the DC-rated fuse (DCF). These two classes are further separated into two sub-categories, the current limiting fuse (CLF) and the non-current limiting fuse (NCLF). Depending on the application, either an AC or DC rated fuse can be used. The main application fields of fuses include the protection of electrical equipment such as motors, transformers, and other electrical loads; the emergency protection of supply lines in case of fault conditions; the protection of transformers and other switching devices; and the protection of the electrical wiring.

The working principle of a fuse is based on two elements, electrical current and heat. When an excessive current flows through the fuse, the heat generated will immediately cause the wire to expand which in turn causes the fuse to open. This will prevent further current from flowing through, thus stopping the damage caused by the excessive current.

AC Rated Fuses

AC rated fuses, also known as ACFs, are a type of fuse that is designed to be connected to alternating current (AC) systems. As the name implies, AC rated fuses can be used to protect AC powered equipment such as motors. AC rated fuses are rated for a certain amount of current, and as the current increases the fuse will open and stop further current from flowing. AC rated fuses are available in a wide range of sizes and are often used in conjunction with other protective devices such as circuit breakers.

Current Limiting Fuses

Current limiting fuses, also known as CLFs, are a type of fuse designed for use in DC systems. Current limiting fuses work by limiting the amount of current that is able to flow in the circuit. A current limiting fuse will allow current to flow through until the fuse is filled with enough heat to cause the fuse wire to expand, at which point the fuse will open and stop further current from flowing.

Non-Current Limiting Fuses

Non-current limiting fuses, also known as NCLFs, are a type of fuse designed for use in AC systems. Non-current limiting fuses are designed to prevent damage caused by excessive currents in AC powered systems. They are designed to open at a predetermined current level and protect the circuit from further damage. Non-current limiting fuses are not as commonly used as other fuse types because of their limited current protection capabilities.

In conclusion, fuses are an essential part of modern electrical systems. They are designed to prevent damage caused by excessive currents and to protect the system from further harm. Although they are only one part of an electrical system, fuses are often the first line of defense against dangerous currents. By understanding the different types of fuse available and their applications, engineers and technicians can ensure that their systems are protected from the dangers of high currents.

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