043702.5WR Circuit Protection

Series:	437
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Board Mount (Cartridge Style Excluded)
Current Rating:	2.5A
Voltage Rating - AC:	32V
Voltage Rating - DC:	35V
Response Time:	Fast
Package / Case:	1206 (3216 Metric)
Mounting Type:	Surface Mount
Breaking Capacity @ Rated Voltage:	50A
Melting I²t:	0.225
Approvals:	CSA, UR
Operating Temperature:	-55°C ~ 150°C
Color:	--
Size / Dimension:	0.126" L x 0.064" W x 0.032" H (3.20mm x 1.63mm x 0.82mm)
DC Cold Resistance:	0.043 Ohms

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What is the 043702.5WR Fuse?

The 043702.5WR (WR meaning “With Reset”) fuse is a type of protective device designed to protect against electric shock and fire due to overcurrents and overloads. The 043702.5WR fuse is a visual warning fuse that is designed to prevent a circuit from becoming overloaded and/or short-circuited. It is used to protect electronic equipment and circuits from excessive currents that could damage the components, reduce service life, or cause a circuit to become dangerously hot. It also protects against short-circuiting of sensitive electronic equipment.

Application Field of the 043702.5WR Fuse

The 043702.5WR fuse is generally used in applications that require high reliability and accuracy. It can be found in a wide range of industry sectors, including power distribution systems, communications networks, and industrial control systems. These fuses are often used to protect critical equipment such as UPS systems, industrial HVAC systems, and large-scale power systems. The 043702.5WR fuse is also commonly used in precision medical equipment, high-speed machine tools, semiconductor fabrication plants, military installations, and nuclear power plants.

Working Principle of the 043702.5WR Fuse

The primary purpose of the 043702.5WR fuse is to protect against the types of overloads and short-circuiting that can occur in electrical circuits. It works by limiting the amount of current that can flow through a circuit. This process is known as overcurrent protection. When the current flowing through the circuit exceeds a certain threshold, the fuse opens, or “blows,” isolating the overload from the rest of the circuit. Once the fuse opens, the circuit is prevented from further overloading or short-circuiting. The fuse must then be replaced with a new fuse of the same rating.When a 043702.5WR fuse is in use, it is important to select a fuse with the proper rating for the circuit. Incorrectly sized fuses can cause damaging short-circuits by allowing too much current to pass through the circuit. It should also be noted that the 043702.5WR fuse is not suitable for circuits that require fast response times, as it can take several seconds for the fuse to open.

Conclusion

The 043702.5WR fuse is an important safety device that is used to protect against electrical shocks and fires due to overcurrents and overloads. This type of fuse is often used in critical applications due to its high reliability and accuracy. It works by limiting the amount of current that can flow through a circuit and prevents further overloading or short-circuiting when the current flowing through the circuit exceeds a certain threshold. However, it should be noted that the 043702.5WR fuse is not suitable for circuits that require fast response times.

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