0446004.ZR Circuit Protection

Response Time:	Fast
DC Cold Resistance:	0.024 Ohms
Size / Dimension:	0.430" L x 0.345" W x 0.150" H (10.92mm x 8.76mm x 3.81mm)
Color:	--
Operating Temperature:	-40°C ~ 125°C
Approvals:	CSA, METI, UL
Melting I²t:	17
Breaking Capacity @ Rated Voltage:	100A AC, 50A DC
Mounting Type:	Surface Mount
Package / Case:	2-SMD, Gull Wing
Series:	446
Voltage Rating - DC:	125V
Voltage Rating - AC:	350V
Current Rating:	4A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

Fuses, such as 0446004.ZR, are a type of electrical device designed to prevent circuits from being overloaded by too much current. They are intended to "blow" or open the circuit when the current gets too high, and thereby protect any further damage from occurring. The 0446004.ZR application field and working principle will be explored in detail in this article.

Application Field

The 0446004.ZR is a medium voltage fuse designed to protect equipment and circuits from overloads and short circuits. It is constructed as a type of medium voltage fuse with an altitude of 5600M and an operating temperature range of -30 °C - +50 °C. This fuse is usually used in photovoltaic systems, industrial systems, and mining applications. When mounted in a photovoltaic system, it protects against a short circuit, reverse connection and over-voltage conditions. In industrial or mining systems, the 0446004.ZR fuse is designed to protect equipment from any overloads or short circuits caused by external disturbances.

Working Principle

The 0446004.ZR fuse works on a simple principle: when the current flowing through the fuse exceeds its rated value, the fuse element "blows" or melts due to the heat generated by the current. This causes the circuit to be opened and the current to be stopped. It is important to note that the 0446004.ZR is designed to conduct only a certain amount of current, beyond which it will open the circuit and blow. This ensures that any further damage to the equipment or circuit can be prevented. The 0446004.ZR is a low-energy fuse, and takes longer to blow than a high-energy fuse. It will typically take up to 10 seconds for the fuse link to open and stop the current at its maximum rating. This allows the equipment to cool down or the fault to clear before the circuit is opened.

Conclusion

The 0446004.ZR fuse is a medium voltage fuse designed to protect equipment and circuits from overloads and short circuits. This fuse is usually used in photovoltaic systems, industrial systems, and mining applications, where it will open the circuit to prevent any further damage occurring. The 0446004.ZR works on the principle of the fuse element "blowing" when the current flow exceeds its rated value, and takes up to 10 seconds to open the circuit when it is at its maximum rating. This makes the 0446004.ZR a useful device for circuit protection in all types of electrical applications.

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