043803.5WR Circuit Protection

Series:	438
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Board Mount (Cartridge Style Excluded)
Current Rating:	3.5A
Voltage Rating - AC:	12V
Voltage Rating - DC:	32V
Response Time:	Fast
Package / Case:	0603 (1608 Metric)
Mounting Type:	Surface Mount
Breaking Capacity @ Rated Voltage:	50A
Melting I²t:	0.4752
Approvals:	CSA, UL
Operating Temperature:	-55°C ~ 150°C
Color:	--
Size / Dimension:	0.061" L x 0.033" W x 0.020" H (1.54mm x 0.85mm x 0.50mm)
DC Cold Resistance:	0.0203 Ohms

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Introduction

043803.5WR is type of fuse, and it is used within industrial and commercial power systems. Specifically, it is designed to be used in equipment that receives power from a transformer. Fuses are invaluable components in power systems. They will open in the event of an overload or short circuit, thereby protecting vital components from sustaining more damage than is absolutely necessary.

Purpose

The purpose of the 043803.5WR is to provide reliable and efficient protection for the power system where it is installed. The fuses are designed to open immediately in the event of an overload or short-circuit, thereby \'breaking the circuit\' and preventing any further current flow. This allows for a delay in the amount of damage caused by the overload or short-circuit, and further protects the equipment connected to the power system.

Design

The 043803.5WR fuse is designed to be installed in a fuse holder which is connected to the power system. It is composed of two main parts; the fuse element and a fuse base. The fuse element is a cylindrical metal tube which is filled with a conductor-like material. This provides the low resistance path needed for the current to flow, and also acts as a heat sink. It is held in place in the base by two metal supports, one at each end. The fuse base is usually made of ceramic, and also houses the fuse contacts.

Operation

When the current flowing through the 043803.5WR exceeds its rated value, the fuse element will begin to heat up due to the increased resistance in the element. When the temperature reaches a certain point, the metal supports will melt, and the fuse element will break. This breaks the circuit, preventing any further current flow and protecting the power system from damage.

Variants

The 043803.5WR comes in a wide range of variants, depending on the application. For example, there are variants designed for high voltage systems, as well as those designed for low voltage systems. There are also variants designed for AC or DC power, as well as those designed for specific frequencies, such as 50Hz or 60Hz.

Conclusion

The 043803.5WR is a reliable and efficient type of fuse, designed to provide protection for industrial and commercial power systems. Its two main components; the fuse element and fuse base, provide the necessary protection from overloads and short-circuits. It also comes in a wide range of variants, allowing it to be used in a variety of power systems.

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