5HF 315

Package / Case:	5mm x 20mm
DC Cold Resistance:	0.76 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, UL
Melting I²t:	0.051
Breaking Capacity @ Rated Voltage:	1.5kA
Mounting Type:	Holder
Series:	5HF
Response Time:	Fast
Voltage Rating - AC:	250V
Current Rating:	315mA
Fuse Type:	Cartridge, Ceramic
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction
5HF 315 is a kind of fuse developed by the company Bussmann. It has been used to protect a variety of electrical systems and products, from simple AC circuits to more complex DC circuits, including servers, communications equipment, UPS systems, CNC machines, and mission-critical infrastructure. But what is a 5HF 315? What makes it so useful for so many applications? In this article, we will look at the 5HF 315’s application field and working principle.

Application Field
The 5HF 315 is a fast-acting fuse that is capable of quickly and accurately protecting electrical circuits from overcurrent incidents. This is done through a fuse element, which is designed to heat and melt when it is overloaded. The fact that it is fast-acting is what makes it so suitable for use in a variety of different applications. For example, it can be used to protect transformers, motors, and motors that draw current from large batteries. It is also suitable for use in AC-powered systems, DC-powered systems, and switching power supplies. Furthermore, it is suitable for both single-phase and three-phase systems.

Working Principle
The working principle of the 5HF 315 is relatively straightforward. The fuse element at the center of the 5HF 315 is composed of a low melting point metal, such as tin or lead. When the current flowing through the fuse exceeds the fuse’s rating, the metal heats up and melts, thereby breaking the circuit and preventing any further current flow. This ensures that the circuit and components are not damaged by an overcurrent incident. It is important to note that the 5HF 315 fuse has a low hold current, meaning it can handle small fluctuations in current without going into a fault state. This makes it suitable for use in sensitive electronics and mission-critical applications.

Advantages
The 5HF 315 has become a popular choice for a variety of different applications due to its numerous advantages over other fuse types. The first is that it is fast-acting, with very little time required for the fuse element to reach its melting point. This ensures that little or no damage is done to any equipment connected to the circuit. Another advantage of the 5HF 315 is that it has a low hold current. This means that it can handle small fluctuations in current without going into a fault state, which makes it suitable for applications that require a lot of accuracy. Furthermore, the 5HF 315 fuse is more reliable than other fuses, and it is relatively easy to install, even in tight spaces.

Conclusion
The 5HF 315 fuse from Bussmann is a fast-acting fuse with a variety of uses in both AC and DC systems. It is composed of a low melting point metal, which heats up and melts when the current exceeds its rating, thus breaking the circuit and preventing any further damage. The 5HF 315 has become the fuse of choice for many applications because of its fast-acting properties, low hold current, and reliability. We hope this article has given you a better understanding of the 5HF 315 fuse and its application field and working principle.

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