Package / Case:	5mm x 20mm
DC Cold Resistance:	0.009 Ohms
Size / Dimension:	0.201" Dia x 0.787" L (5.10mm x 20.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CCC, CE, CSA, PSE, SEMKO, UL
Melting I²t:	126
Breaking Capacity @ Rated Voltage:	1.5kA
Mounting Type:	Holder
Series:	5HF
Response Time:	Fast
Voltage Rating - AC:	250V
Current Rating:	8A
Fuse Type:	Cartridge, Ceramic
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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5HF 8 Application Field and Working Principle

Introduction

Fuses are electrical protection devices designed to quickly disconnect electric circuits to protect them from damage due to excessive current. 5HF 8 is an electric short-circuit and overload protection device for circuit protection. This article discusses the application field and working principle of the 5HF 8 fuse.

Application Field

The 5HF 8 fuse is suitable for protecting overloads and short circuits in AC and DC circuits. It is mainly used in electronic equipment, instruments, communication equipments, home appliances, air conditioners, transformers, various electrical apparatus and other products. The 5HF 8 fuse is an internal miniaturized fuse that can be used in the latest electronic equipment. It is commonly used in communications equipment, remote systems and other equipment where manual resetting is not allowed and reliability in operation is required. 5HF 8 fuses have the advantage of being compact and lightweight.

Working Principle

When the current in the circuit exceeds the rated current, the 5HF 8 fuse melts itself to disconnect the circuit in a very short time. This process protects the circuit from overload and short circuit. The working principle of the 5HF 8 fuse is simple. It consists of a metal strip connected to two fixed contacts. When electric current passes through the fuse, the metal strip heats up and melts. This interrupts the flow of electric current in the circuit, disconnecting the circuit from the power supply. The 5HF 8 fuse has a thermal fuse with a certain resistivity. When the current which passes through the fuse or the wire exceeds its rated current, the thermal fuse will discharge heat and the metal strip will begin to melt, interrupting the circuit and protecting the circuit from excessive current.

Conclusion

5HF 8 is an electric short-circuit and overload protection device for circuit protection. It is suitable for protecting overloads and short circuits in AC and DC circuits, and is mainly used in electronic equipment, instruments, communication equipments, home appliances, air conditioners, transformers, and various electrical apparatus. The working principle of the 5HF 8 fuses is simple – it consists of a metal strip connected to two fixed contacts which melts when electric current passes through the fuse, interrupting the flow of electric current in the circuit.

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

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