0251001.PF003L

Response Time:	Fast
DC Cold Resistance:	0.128 Ohms
Size / Dimension:	0.110" Dia x 0.280" L (2.80mm x 7.11mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CCC, CSA, PSE, TUV, UR
Melting I²t:	0.256
Breaking Capacity @ Rated Voltage:	50A AC, 300A DC
Mounting Type:	Through Hole
Package / Case:	Axial
Series:	PICO® II 251
Voltage Rating - DC:	125V
Voltage Rating - AC:	125V
Current Rating:	1A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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Introduction

The 0251001.PF003L Fuse is a quick-acting fuse that provides current-limiting protection of electrical circuits. The fuse is available in a variety of amperage ratings for a multitude of applications. This article will discuss the application field and working principle of the 0251001.PF003L Fuse and provide some general guidelines for selecting and using the fuse.

Application Field

The 0251001.PF003L Fuse is specifically designed for the protection of DC circuits operating at a voltage ranging from 0 to 28V, including circuits in auto, marine, and industrial applications. It is rated for a peak current of 0.5A and a continuous current of 0.25A.The 0251001.PF003L Fuse is particularly effective in protecting circuits from short-circuit or over-current conditions. Its quick-acting design allows it to react quickly to both situations and protect the surrounding components from harm. This makes it ideal for applications such as motor controllers, automotive systems, and LED lighting.

Working Principle

The 0251001.PF003L Fuse consists of a hermetically sealed ceramic body and two lead wires. The body contains a glass tube filled with a low-melting point metal alloy. When the current through the fuse exceeds its rated value, the metal alloy inside the body melts and breaks the circuit, cutting off the power supply.The fuse also contains an internal voltage-dependent time delay that prevents it from blowing unnecessarily. This ensures that the fuse will not be activated if there is a momentary spike in the current, such as that caused by a motor starting up. This helps to prolong the life of the fuse and protect the surrounding components.

Conclusion

The 0251001.PF003L Fuse is a quick-acting fuse designed for the protection of DC circuits operating at a voltage ranging from 0 to 28V. Its high amperage rating and internal voltage-dependent time delay make it ideal for a wide range of applications such as motor controllers, automotive systems, and LED lighting. Careful selection of the fuse and proper installation is needed to ensure that it operates correctly and provides the desired level of protection.

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