20FC

Applications:	Semiconductors
Melting I²t:	30
Size / Dimension:	0.343" Dia x 2.157" L (8.70mm x 54.80mm)
Package / Case:	Cylindrical, Blade Terminal (Bolt)
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	200kA
Operating Temperature:	--
Approvals:	--
Class:	--
Features:	--
Series:	FC
Response Time:	--
Voltage Rating - DC:	660V
Current Rating:	20A
Fuse Type:	Cartridge
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Abstract

This article introduces the application field and working principle of 20 FC fuse, which are categorized into Electrical, Specialty Fuses. This introduction assumes the reader has a fairly good understanding of the function of engineered fuses. Therefore, this article is mainly focused on the types of 20 FC fuse and their working principles.

Introduction

Fuses are important safety components used in electrical circuits to protect equipment from damaging excess currents. The 20 FC fuse is a specialty fuse widely used in circuit protection applications up to 600 volts AC and 250 volts DC. The 20 FC fuse is generally used in lighting, sign, AC, DC and motor-driven equipment, as well as in electrical distribution networks.

20FC Applications and Working Principles

Applications

20 FC fuses are mainly used to protect lighting circuits, electronic equipment, motor circuits and AC/DC equipment. 20 FC fuses work as current-limiting fuse, allowing it to open quickly before over-current damages connected equipment. It has high interrupting rating, low impedance and fast action, making it a reliable component to protect electrical components in circuits.

Working Principle

The 20 FC fuse is an electrical device that will break an electric circuit when too much current flows through it, preventing damage to connected components or equipment due to excessive current. It consists of a fuse wire in a glass capsule which melts and breaks the connection when a predetermined amount of current passes through.The fuse wire of the 20 FC fuse is composed of a special alloy that can quickly break the electric circuit when too much current passes through it. When an over-current passes through the fuse, heat is generated by the electric current running through the fuse wire. The temperature rise in the fuse wire is such that it quickly melts and vaporizes the metal wire, breaking the electrical circuit.Since the melting point and electrical resistivity of the fuse wire is constant, a certain amount of current will cause the fuse wire to melt and vaporize. This current level is called the “rated current” of the fuse. When the current exceeds the rated current, excess heat will be generated within the fuse, causing it to break the circuit and disconnect power to the equipment.

Conclusion

The 20 FC fuse is a widely used component in many electrical protection applications, due to its fast response in case of over-current, its light weight and flame retardant construction. The 20 FC fuse can quickly and reliably protect equipment and components from electrical damages due to over-current conditions. It is important to note that fuses should be sized correctly for the application to work properly.

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