004245008

004245008 Application Field and Working Principle

Specialty fuses are devices that protect the electric equipment from over current, overload and short circuit, protecting circuit and components from being burned. These fuses have many different shapes and ratings. The 004245008 is a special type of this device.

The 004245008 specialty fuse is a three-pole, 480V AC fuse with a rated current of 30 Amps and a rated breaking capacity of 10 kA. All poles have an adjustable time delay of 0.2 to 1.2 seconds and are equipped with a trip indicator, making testing and troubleshooting easier. It has a variety of applications such as protecting emergency lighting systems, power distribution systems, control circuits, motor control systems and many other AC circuits.

Working Principle

When excessive current is drawn through the fuse, the heat generated by the high current causes the fuse element to melt, which breaks the circuit and isolates the fault. As the fuse breaks the circuit, the trip indicator is activated which provides easy troubleshooting.

The working principle is based on Ohm\'s Law, which states that the current flowing through a circuit is directly proportional to the voltage applied across it. If the current exceeds the rated current, the resistance of the fuse element increases, and the heat generated melts the fuse element, thereby breaking the circuit.

Advantages

The main advantage of 004245008 specialty fuses is that they provide a high degree of protection against over current, overload and short circuit. It has a high breaking capacity, making it suitable for use in circuits with high currents. It also has an adjustable time delay, which ensures that the fuse does not blow prematurely due to momentary surges.

Moreover, the trip indicator makes testing and troubleshooting easier. The fuse also uses small size, making it suitable for use in confined spaces.

Conclusion

The 004245008 is a specialty type of fuse that provides a high degree of protection against over current, overload and short circuit. It has a variety of applications, such as protecting emergency lighting systems, power distribution systems, control circuits, motor control systems, and many other AC circuits. It is a highly reliable device and is suitable for use in confined spaces due to its small size.