0447002.Y

Series:	447
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Board Mount (Cartridge Style Excluded)
Current Rating:	2A
Voltage Rating - AC:	350V
Voltage Rating - DC:	125V
Response Time:	Fast
Package / Case:	Radial, Box
Mounting Type:	Through Hole
Breaking Capacity @ Rated Voltage:	100A AC, 50A DC
Melting I²t:	2.8
Approvals:	CSA, METI, UL
Operating Temperature:	-40°C ~ 125°C
Color:	--
Size / Dimension:	0.430" L x 0.150" W x 0.404" H (10.92mm x 3.81mm x 10.26mm)
DC Cold Resistance:	0.056 Ohms

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Introduction

0447002.Y is a type of fuse, which falls into a group of devices referred to as current limiting fuses. This type of fuse is designed to act as the primary overcurrent protection device in electrical circuits. These fuses are characterized by their high current interruption capacity, electrical robustness and superior overcurrent protection performance.

Application Fields

0447002.Y current limiting fuses are mainly used in electrical power systems and consumer electronics. They are commonly employed as the overcurrent protective device in power distribution systems, high voltage networks, and motor circuits. They are also used in data centers, industrial motors, and other high current applications. In consumer electronics, 0447002.Y fuses are often found in communication systems, mobile phone charging systems and laptop computer AC adapters. Moreover, 0447002.Y current limiting fuses are used in power supplies for medical applications since they have low melting I2t characteristics, and offer excellent overcurrent protection with no nuisance tripping.

Working Principle

The 0447002.Y current limiting fuse is composed of a hollow cylindrical metal casing that houses a metal switch element. The fuse contains a silver-plated wire that acts as a current carrying element. When the current through the wire exceeds a pre-determined value, the device melts and self-extinguishes, preventing further current flow. In order to ensure that the 0447002.Y fuse does not trip at low current levels, the fuse requires an initial energy which has to be applied before the current is interrupted. This energy is the “opening energy” of the device. The opening energy is stored in a spring, which is compressed when energized.Once the fuse has been opened, it must remain off until it is re-energized. As a result, the fuse is designed to be slow-blow, which means that it needs to melt a predetermined amount of material before it is opened. This ensures that the fuse does not trip at low current levels, and provides a degree of safety.The 0447002.Y fuses offer extremely high current interruption ratings of up to 250 KA (RMS) at 600 V and up to 63 KA (RMS) at 20 KV. This ranges from about 1 to 50 times the rating of the device, depending on the size and type of fuse.

Conclusion

In conclusion, 0447002.Y current limiting fuses are an important and reliable tool for protecting electrical circuits and consumer devices from overcurrents. This type of fuse is characterized by its high current interruption capacity, electrical robustness and superior overcurrent protection performance. It is mainly used in power distribution systems, high voltage networks, motor circuits, communication systems, mobile phone charging systems, laptop computer AC adapters and power supplies for medical applications. The fuse is composed of a hollow cylindrical metal casing that houses a metal switch element, and a silver-plated wire that acts as a current carrying element. When the current through the wire exceeds a pre-determined value, the device melts and self-extinguishes, and it offers extremely high current interruption rating of up to 250 KA (RMS) at 600 V and up to 63 KA (RMS) at 20 KV.

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