5.5VFNHA3R

Series:	*
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Mounting Type:	Holder
Package / Case:	Fuse Link
Size / Dimension:	3.000" Dia x 15.866" L (76.20mm x 403.00mm)

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Introduction

The 5.5VFNHA3R is an electrical specialty fuse that can be used in a variety of applications. This type of fuse is designed to protect various power circuits and other sensitive electronics from overcurrent or overvoltage damage. The 5.5VFNHA3R is a type of Current Limiting Fuse (CLF), which provides reliable overcurrent protection for applications that require a higher current tolerance than standard fuses. The 5.5VFNHA3R is a fast-acting fuse with a time-delay characteristic of 5-7 seconds.

Application Field

The 5.5VFNHA3R is mainly used in medium-power applications where a low current rating is desired but a high fault current must be tolerated. It is well suited for the protection of sensitive electrical equipment such as PCs, monitors, industrial equipment, telecom equipment, and home appliances. It is also ideal for the protection of high-power, high-current switching power supplies.

Working Principle

The 5.5VFNHA3R utilizes a special construction that provides fast reaction time and overcurrent protection together with improved current limit performance. The fuse consists of a metal element, a ceramic body, and a metal cap. When an overload occurs, the metal element melts, and the ceramics body absorbs the heat. The surround metal cap acts as a heat sink and disperses the heat. The fuse has an internal electromechanical component which reacts to the current and opens the circuit if the current exceeds the fuse’s pre-set rating. The 5.5VFNHA3R is designed to trip at less than 2-3 times of its rated current. Once the circuit is opened, the current is blocked, and the fuse is no longer operational, meaning it must be replaced.

Installation

The 5.5VFNHA3R comes with a clamp-type terminal connection. To ensure proper installation, three requirements must be met: the correct terminal type for the application must be used, the terminals must be suitably arranged for the application, and the connections must be secure and properly sealed. Once the terminals are securely installed, the fuse must be placed in the circuit, taking care to ensure that the rated current corresponds to the existing circuit current.

Testing

Testing of the 5.5VFNHA3R should be done at least once a year. This can be done with a GFI tester or a voltage tester. The test should be performed both before and after installation. The tester should be checked for accuracy and the fuse body should be inspected for any visible damage.

Advantages

The 5.5VFNHA3R offers several advantages over standard fuses. It is more reliable, with improved reaction times and fast breaking capability. It also provides a higher tolerance for fault currents and has a lower melting point, which makes it well-suited for applications that require a higher current tolerance. Additionally, the 5.5VFNHA3R is mechanically robust and offers a greater degree of protection against dust, moisture, and vibration.

Conclusion

The 5.5VFNHA3R is an ideal choice for applications requiring a reliable overcurrent and overvoltage protection. It has many advantages over standard fuses, including greater reliability, faster reaction times, and improved fault current tolerance. With proper installation and testing, the 5.5VFNHA3R can provide a reliable and effective solution to many power circuit and electronic protection needs.

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