5MF 300-R

Package / Case:	5mm x 20mm
DC Cold Resistance:	1.18 Ohms
Size / Dimension:	0.201" Dia x 0.787" L (5.10mm x 20.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, cULus
Melting I²t:	0.02
Breaking Capacity @ Rated Voltage:	200A
Mounting Type:	Holder
Series:	5MF
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 commonly-used devices for the protection of electrical circuits from excessive current. In particular, the 5MF 300-R series is a form of low voltage fuse specifically designed to suit a variety of applications. This article will discuss the application field and working principle of 5MF 300-R fuses.

Application Field

The 5MF 300-R series is well-suited for use in many different settings. It is ultra-slim in design and can be installed in narrow spaces with low clearance. The form of the fuse lends itself well to printed circuit boards which makes it especially popular for enclosures and sub-panel boards. In addition, this type of fuse is used to protect other more powerful types of machinery and equipment, such as electric motors, pumps, and ventilation fans. Furthermore, this type of fuse can be placed in automotive, industrial, or consumer applications. It is UL and CSA approved, and comes in a variety of sizes from 0.25 amp to 30 amp ratings. This allows it to be used for a host of different sizes of electrical equipment and circuits. The 5MF 300-R series is also designed to be compatible with a range of different accessories such as fuse clips, fuse blocks, and back-up fuses.

Working Principle

The working principle of the 5MF 300-R series fuse is simple but effective. When an excessive current is detected, the fuse will activate and blow, thus breaking the circuit in order to protect the electrical equipment. This is achieved by having an internal filament which melts as the temperature rises due to an excessive current influx. The metal filament consequently breaks the circuit and restricts the flow of current. The main advantage to low voltage fuses like the 5MF 300-R series is their reduced size and weight. They are lightweight and compact when compared with other fuses, and can be used safely in smaller electrical systems. This makes them a popular choice for places where space is at a premium, such as in battery banks, signal processing systems, and in portable facilities.

Conclusion

The 5MF 300-R series of low voltage fuses is ideal for a wide range of applications. It is a small and lightweight fuse which is suitable for a variety of different electrical systems. Furthermore, it is UL and CSA approved and comes in a range of different sizes. Its working principle is simple yet effective, and is based on the melting of an internal filament when an excessive current is detected in order to restrict its flow and protect the electrical circuit. Thus, the 5MF 300-R series fuse provides a reliable choice for the protection of electrical equipment.

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