Series:	HFA
Part Status:	Active
Lead Free Status / RoHS Status:	--
Fuseholder Type:	Holder
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge
For Use With/Related Products:	3AG
Fuse Size:	1/4" Dia x 1 1/4" L (6.4mm x 31.8mm)
Number of Circuits:	1
Voltage:	250V
Current Rating:	20A
Mounting Type:	Free Hanging In Line
Orientation:	--
Termination Style:	Crimp
Contact Material:	Copper
Contact Finish:	Tin

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Introduction

Fuseholders are devices used to protect electronic components and wires from overload and short-circuits. They come in different types and each has its own purpose. The two types of Fuseholders that are commonly used in commercial applications are BK/HFA and SMB. This article will discuss the BK/HFA application field and working principle.

Application Field

BK/HFA Fuseholders are typically used in power distribution systems, telecommunications, computer systems, industrial control systems and automotive systems. This type of Fuseholder is ideal for applications where space is a concern, because they are often small and compact and can be used in confined spaces. These Fuseholders are also commonly used in applications that require fast response times, such as in consumer electronics, as they are able to respond quickly to overcurrent and short-circuit conditions.

Working Principle

BK/HFA Fuseholders operate on the principle of thermal action. This means that when an overcurrent or short-circuit occurs, certain components in the Fuseholder will heat up, expanding and tripping the Fuseholder’s circuit. This means that any circuit connected to the Fuseholder is promptly tripped, removing the current and protecting the circuit.The Fuseholder’s components are designed to sense even the slightest overcurrent or short-circuit, meaning that the response time is very fast. Because these components are sensitive, the Fuseholder is designed to only trip when necessary and not unnecessarily trip when the current is within the safe range.

Conclusion

In conclusion, BK/HFA Fuseholders are popularly used in applications where space is limited and/or where fast response times are crucial. They operate on the principle of thermal action, using sensitive components to quickly detect an overcurrent or short-circuit and trip the circuit for protection. These Fuseholders are extremely important for protecting electronic components and wires from damage.

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