0034.7204

Response Time:	Slow
Size / Dimension:	0.335" Dia x 0.335" H (8.50mm x 8.50mm)
Color:	--
Operating Temperature:	-40°C ~ 85°C
Approvals:	cULus
Melting I²t:	0.0313
Breaking Capacity @ Rated Voltage:	50A
Mounting Type:	Through Hole
Package / Case:	Radial, Can, Vertical
Series:	MSTU 250
Voltage Rating - AC:	250V
Current Rating:	80mA
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Fuses: 0034.7204 Application Field and Working Principle

Fuses are an integral part of the electrical power grids, industrial and residential control and automation systems, and provide a means of providing overcurrent protection as well as circuit isolation. The 0034.7204 Fuse is a type of fuse specifically designed to protect against surges and other sudden, large increases in current. They are typically used in branch circuits and other locations where there is a need to provide extra protection against unexpected current spikes, and in many cases, they are the last line of defense in protecting the electrical system.

Design and Construction

The 0034.7204 Fuse is a low voltage and current-rated, code-compliant device. It consists of two layers of silver-nickel alloy and a thin film of insulation between them. The layers are usually stamped with the fuse size and current rating. The contacts are designed so that when the current passing through the fuse reaches or exceeds the rating, the contact temperatures rise and the fuse melts, thus breaking the circuit and protecting the downstream components from damage due to overcurrent.

Application Field

The 0034.7204 Fuse is commonly used in industrial and residential control and automation applications, and it is an ideal choice for branch circuit protection and circuit isolation. It can also be used in applications where there is danger of overcurrent from motors, pumps, and other equipment. Additionally, it can serve as a protection for responsive loads like computers, dimmers, and digital devices.

Working Principle

The 0034.7204 Fuse operates on the principle of melting. When excessive current passes through the fuse, the contact temperature rises, the alloy melts, and the connection is broken. The fuse will also provide protection against voltage surges by limiting the current flow to the rated current value and then tripping the circuit. After the circuit has tripped, the fuses must be replaced before it can be used again, thus ensuring that the circuit is ready for future use.

Advantages and Limitations

The 0034.7204 Fuse has several advantages over other types of fuses. First, since it is constructed with two layers of silver-nickel alloy, it can withstand higher contact temperatures than other types of fuses. This allows it to be used in a wider range of applications. Additionally, the fuse has a high resistance to thermal cycling and shock, making it a reliable form of protection for sensitive loads.However, the 0034.7204 Fuse does have some limitations. It is not suitable for use in applications where high inrush currents, high transient voltages, or short-time overloads are to be expected, as it cannot handle these types of stresses. Additionally, it can become fragile over time due to thermal cycling, which can reduce its efficacy in applications that require frequent operation.

Conclusion

The 0034.7204 Fuse is a versatile and reliable low voltage and current-rated fuse. It is designed to provide overcurrent protection and circuit isolation for industrial and residential control and automation systems, and can serve as a last line of defense against unexpected current spikes in branch circuits and other locations. It is designed to withstand higher contact temperatures than other fuses, allowing it to be used in a wide variety of applications, but it is not suitable for use in applications where high inrush currents, high transient voltages, or short-time overloads are expected.

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