0031.8421

Series:	OGN-SMD
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Fuse Type:	Cartridge, Glass
Current Rating:	3.15A
Voltage Rating - AC:	250V
Response Time:	Fast
Package / Case:	5mm x 20mm w/Holder
Mounting Type:	Holder, Surface Mount
Breaking Capacity @ Rated Voltage:	35A
Melting I²t:	16.1
Approvals:	cURus, VDE
Operating Temperature:	-40°C ~ 85°C
Color:	--
Size / Dimension:	0.197" Dia x 0.787" L (5.00mm x 20.00mm)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fuses

Fuses are electrical safety mechanisms designed to protect against overloads, overheating, short circuits, and other hazardous conditions by diverting potentially damaging electrical current away from electrical components and protecting device circuits. The 0031.8421 is a type of fuse commonly used in electrical circuits and is made with a special material with good operating characteristics. This fuse has a certain current range that, when exceeded, will cause the fuse to blow, and when continued, will automatically reset itself after the power is turned off.

How Does it Work?

The 0031.8421 is a thermal-fuse and uses a bi-metallic strip that is heated by the current. It contains two strips of different metals that expand at different rates when heated and are separated by an insulating material. As the current is passed through the two strips, it begins to heat the bi-metallic strip and when it exceeds the current’s rated melting point the bi-metallic strip bends and breaks the contact between the two strips. This breaks the circuit, causing the fuse to blow.

Applications

The 0031.8421 is primarily used in heating and cooling systems to protect against overloaded and short circuit conditions. This fuse is also used in home appliances such as microwaves, refrigerators, dishwashers, and washing machines to help protect against power surges and electrical overloads. In addition, the 0031.8421 is often used in electric motors, transformers, security systems, and other equipment that requires protection from power surges and high currents.

Advantages

The 0031.8421 has several advantages such as:

• Low cost compared to other similar solutions.
• The fuse’s activation is reversible, which allows the system to reset itself after the power is turned off.
• The fuse is designed to hold its performance up to its rated current value.
• The thermal fuse is highly reliable and nearly maintenance free.

Disadvantages

Although the 0031.8421 has many advantages, there are some drawbacks that should be taken into consideration before purchasing the fuse. The fuse is limited to the current range that it is designed for, and if the current range exceeds the fuse’s rating, it could lead to system failure. Also, if the temperature increases too rapidly, the fuse could blow even if the current is kept at its rated level, due to the time delay in the fuse’s material response.

Conclusion

The 0031.8421 thermal fuse is a highly reliable and efficient device that is designed to protect against electrical overloads, short circuits, and other hazardous conditions that can damage electrical components and circuits. It has a wide range of applications in home appliances, heating and cooling systems, electric motors, and other electrical systems. Although the fuse does have some drawbacks, it is an excellent solution for protecting electrical components and circuits from potentially damaging current.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description