Series:	494
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:	4A
Voltage Rating - AC:	32V
Voltage Rating - DC:	32V
Response Time:	Fast
Package / Case:	0603 (1608 Metric)
Mounting Type:	Surface Mount
Breaking Capacity @ Rated Voltage:	35A
Melting I²t:	0.576
Approvals:	CSA, UR
Operating Temperature:	-50°C ~ 90°C
Color:	--
Size / Dimension:	0.063" L x 0.032" W x 0.012" H (1.60mm x 0.81mm x 0.31mm)
DC Cold Resistance:	0.013 Ohms

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Fuses: 0494004.NR Application Field and Working Principle

Fuses are a critical component of electrical systems, and the 0494004.NR fuse is no exception. This fuse is specifically designed to protect smaller circuits against overloads. Due to its small size, the 0494004.NR is a great choice for use in tight spaces, such as cramped control panels or behind hand-held devices.

What is a Fuse?

A fuse is a simple electrical device that is designed to protect electrical systems against overloads. Essentially, it is like a control valve for electricity. When more electrical current is drawn than the fuse\'s rated capacity, the fuse element rapidly heats up, melts, and breaks the circuit. This not only prevents damage to the electrical system, but also prevents fire and electrocution hazards.

Types of Fuses

There are several types of fuses available on the market today. Each is designed for a specific application. Some of the most common types of fuses include fast blow, slow blow, time delay, thermal cut-off, and zero-crossing. The 0494004.NR fuse is a fast blow fuse, meaning that it is designed to protect much smaller circuits against short-term overloads. When current in the circuit exceeds its rated capacity, it will quickly break the circuit. This helps protect against damage in smaller, higher-voltage applications, such as those encountered in some automotive and industrial applications.

Applications of 0494004.NR Fuses

The 0494004.NR fuse is designed for use in small, higher-voltage applications, including automotive and industrial applications. It is particularly well-suited for use in tight spaces, due to its relatively small size and the fact that it is fast blow. The 0494004.NR fuse is useful in applications such as:

• Controlling motors, assembly lines, and other industrial equipment
• Protecting automotive electrical systems, including power windows, sunroofs, wipers, and other power-operated features
• Protecting electrical components in small appliances, such as microwaves, toasters, and vacuum cleaners

Working Principle of 0494004.NR Fuses

As mentioned earlier, fuses are designed to protect against overloads. The 0494004.NR has a rated capacity of 20 amps at 32 volts. When the circuit exceeds this amount of current, the fuse element quickly heats up and melts, breaking the circuit and preventing further damage.The amount of current the fuse can safely handle is determined by its design and construction. The 0494004.NR, for example, is made from a combination of metal and ceramic, which helps to maintain its rated current capacity. The element is also connected to a metal strip, which is encased in a plastic housing. This combination helps ensure that the fuse element is adequately insulated from the circuit.

Conclusion

The 0494004.NR fuse is a fast blow fuse, which is designed for use in small, higher-voltage applications. Due to its small size, it is ideal for use in tight spaces, such as cramped control panels or behind hand-held devices. When current exceeds its rated capacity of 20 amps at 32 volts, the fuse element quickly heats up and melts, breaking the circuit and preventing further damage. This helps protect both the electrical system and operators from dangerous overloads.

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