Series:	0679H
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:	250mA
Voltage Rating - AC:	350V
Voltage Rating - DC:	72V
Response Time:	Fast
Package / Case:	2410 (6125 Metric)
Mounting Type:	Surface Mount
Breaking Capacity @ Rated Voltage:	50A AC, 100A DC
Melting I²t:	0.02
Approvals:	cURus
Operating Temperature:	-55°C ~ 125°C
Color:	--
Size / Dimension:	0.240" L x 0.100" W x 0.110" H (6.10mm x 2.54mm x 2.79mm)
DC Cold Resistance:	0.61 Ohms

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Fuses

0679H0250-05 Application Field and Working Principle

Fuses are safety devices designed to prevent possible electrical accidents from occurring in automated systems with high voltage or current levels. With the fast development of the technology and industry, fuses have widely used in different application fields, such as power electronics, telecommunications, automotive industry, and they’ve also become more and more popular in home applications. 0679H0250-05 is a quick-acting fuse designed by Bussman according to the standard IEC 60269 and UL 248-4. It was made for circuit protection of control and motor circuits, and it’s also suitable for other types of applications.

Working Principle

Fuses are based on the phenomena of thermal expansion and electrical conduction of metal. As this phenomena results in connection of the circuit wiring, thus it avoids possible electric fire hazards, which is the basic working principle of all types of fuses. 0679H0250-05 is a one-time protection device that operates on the same principle. When overloaded, the fuse wire gets slowly heated up and melts due to Joule heating, thus breaking the circuit.

Application Field of 0679H0250-05

0679H0250-05 is designed specifically for control and motor circuits. It features a current range from 15A to 100A and voltage range up to 600V AC/DC. With a total diameter of just 13mm, it can be installed conveniently on almost any type of circuit board. In addition, 0679H0250-05 has a wide temperature coefficient range from -200 C to +250 C, making it a suitable choice for both indoor and outdoor applications.

Advantage and Disadvantage

The biggest advantage of 0679H0250-05 lies in its compact design, allowing it to be used in a narrow space. It also has very low power loss and good arc extinguishing. Its temperature coefficient range covers a wide temperature range, making it suitable for both indoor and outdoor circuits. However, 0679H0250-05 has one major disadvantage: it can only be used once since it\'s a one-time protection device. Once the fuse wire melts, the circuit breaker is irreversibly damaged and must be replaced.

Safety Precautions

When using 0679H0250-05, it is important to be aware of a few safety precautions. There should always be an equal number of conductors connected to both sides of the fuse holder to prevent the possibility of an arc flash. Additionally, never exceed the current ratings set by the manufacturer, as this can result in unexpected outcomes. Keep 0679H0250-05 away from sources of heat and moisture, and never use it in any environment where explosive gas is present.

Conclusion

To sum it up, 0679H0250-05 is a very suitable type of fuse for control and motor circuits, due to its small size, low power loss and good arc extinguishing. However, due to its one-time protection nature, it should only be used when necessary and with proper safety precautions. With the right usage and care, 0679H0250-05 can provide reliable circuit protection and increase safety for your automated systems.

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