5HFP 400

Package / Case:	5mm x 20mm (Axial)
DC Cold Resistance:	0.55 Ohms
Size / Dimension:	0.217" Dia x 0.827" L (5.50mm x 21.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CCC, CE, CSA, UL
Melting I²t:	0.091
Breaking Capacity @ Rated Voltage:	1.5kA
Mounting Type:	Through Hole
Series:	5HFP
Response Time:	Fast
Voltage Rating - AC:	250V
Current Rating:	400mA
Fuse Type:	Cartridge, Ceramic
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Fuses are a protective device that protect electrical circuits from overheating due to overloading or short-circuiting. The 5HFP 400 application field and working principle of a fuse are commonly used in residential electrical installations and applications where electric power needs to be routed and switched in order to operate safely.

Background of 5HFP 400

The 5HFP 400 is a versatile protective device that is commonly used in residential and industrial electrical applications. It is a low-voltage fuse rated at 400A for AC systems. Its rated current is determined by the time-delay curves given in its instruction manual. The curve includes the melting time-current relationship, which is used for determining system interrupting rating.

Working Principle of 5HFP 400

The 5HFP 400 is a thermal protection device. It operates by allowing sudden changes in current without interrupting the circuit or blowing the fuse. The fuse has an internal mechanism that enables it to operate in this way. This mechanism consists of a bimetallic strip.The bimetallic strip consists of a strip of metal which is wound around another strip of metal. This is placed inside the fuse. When a current passes through the fuse, the bimetallic strip heats up and bends to open the contact points. This breaks the circuit and stops further current flow.

Application Fields of 5HFP 400

The 5HFP 400 application field is very broad. It can be used to protect circuits ranging from residential applications to industrial applications. It can be used to protect circuits in buildings, offices, and other places where power is required. It can also be used in automobiles for protecting the electrical system from damage due to overloads.

Advantages of 5HFP 400

The 5HFP 400 has certain advantages over other fuses. It is easy to install and provides a reliable and effective method of protecting circuits from overloads or short-circuits. It is also low-cost and has a long service life.

Conclusion

The 5HFP 400 fuse is a popular and reliable device that is used in many residential and industrial applications. It has the ability to protect circuits against overloads or short-circuits, and can help to minimize the risk of damage that could be caused by them. Its installation is quick and simple and it can provide efficient protection at a low cost.

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