5MFP 300-R

Package / Case:	5mm x 20mm (Axial)
DC Cold Resistance:	1.3 Ohms
Size / Dimension:	0.217" Dia x 0.827" L (5.50mm x 21.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, cULus
Melting I²t:	0.02
Breaking Capacity @ Rated Voltage:	200A
Mounting Type:	Through Hole
Series:	5MFP
Response Time:	Fast
Voltage Rating - AC:	250V
Current Rating:	300mA
Fuse Type:	Cartridge, Glass
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Fuses are electrical components designed to protect electrical circuits and systems from overcurrent, overvoltage, overload and short-circuit conditions. The 5MFP-300-R is a Class RK5 fuse designed to deliver superior performance and reliability in a wide range of applications. This paper will discuss the application field and working principle of the 5MFP-300-R fuse.

Application Field of 5MFP-300-R

The 5MFP-300-R is designed for a wide range of applications, including the protection of electrical circuits, AC and DC motors, transformers, feeders, branch circuits, motor circuits, control panels, and other installations operating at a maximum 1000V. It is typically used in commercial, industrial, and institutional buildings to protect circuits from overcurrent.

Working Principle of 5MFP-300-R

The 5MFP 300-R fuse consists of a metal housing, an end cap, and two contacts. All components are constructed using high-grade copper and stainless steel for strength and durability. The fuse housing is flame retardant and UL 94 V-0 rated for optimal protection from flame and smoke in the event of an arc fault.When an overcurrent or overload condition occurs, the fuse melts due to heat generated by the current. This causes the two prongs of the fuse to break apart, thus interrupting the circuit and preventing further damage. Once the fuse has blown, it must be replaced.

Conclusion

The 5MFP-300-R is a reliable and robust Class RK5 fuse designed for a wide range of applications. It offers superior performance and protection from overcurrent, overvoltage, overload, and short-circuit conditions. The fuse housing is flame retardant and UL 94 V-0 rated, ensuring optimal safety in the event of an arc fault. By understanding the application field and working principle of the 5MFP-300-R fuse, any user will be able to ensure their circuit is properly protected and running reliably.

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