42402500101

42402500101 Application Field and Working Principle

A 42402500101 Fuse is an electrical safety device designed to automatically protect against excessive current in circuits. It is used to protect electric lines and electrical equipment against excessive current when an electric circuit is overloaded or short-circuited. In most cases, the fuse will interrupt the current or power source to prevent the direct occurrence of hazardous situations. A 42402500101 Fuse can be divided into three types: moulded case, air, and ceramic.

Moulded Case Fuses

Moulded case fuses are made of a polycarbonate housing in which two conductive elements have been encapsulated. They are designed with a safety system intended to provide additional protection from dangerous voltage spikes occurring in the electrical system. The elements inside the fuse can be made of various materials, such as silver, copper, or nickel, depending on the application and current capacity. These fuses are designed to offer fast response time, easy mounting, and maintenance-free operation.

Air Fuses

Air fuses are made up of a body and a conductive element composed of silver or silver-plated contacts. These fuses operate in an atmosphere with very low air pressure. Generally, air fuses are suitable for applications with higher power ratings, and they are mostly used for distribution, Power terminals, and transformers. Advantages of air fuses include the ability to conform to any conduction shape, reduce current inrush, and provide resistance to mechanical shock and vibration.

Ceramic Fuses

Ceramic fuses are generally used for low current capacities and are composed of an annealed metal shell and a ceramic body including a conductive material, such as graphite, silver, or copper. Generally, these fuses are available in various sizes and can be a cost-effective protection solution for low-power applications due to their small size and form. This type of fuse is prone to higher wear and tear, but it is the most reliable protection solution against fire outbreaks.

Working Principle of 42402500101 Fuses

The 42402500101 Fuse’s main function is to safely interrupt the current supply when the current in the circuit exceeds its rated capacity. They work by heating the conductive metal inside the fuse, the heat causes the metal to melt and separate the two terminals, thus breaking the circuit and preventing current from flowing. The fuse is placed on the electrical load or circuit that is to be protected.

When the current through the circuit increases, the fuse element starts heating due to high resistance. The fuse element slowly melts and finally breaks the circuit when the fuse is overloaded. This helps in protecting the electrical system from short circuits, over current, and over-voltages.

Fuses are commonly used in residential and commercial electrical and electronic equipment. Their primary purpose is to protect the device or circuit against excessive current, which can otherwise cause damage to the device or wiring, or lead to an electrical fire in severe cases. Therefore, it is important to use a 42402500101 Fuse that is capable of withstanding the current carrying capacity of the device or circuit.