BK/GBA-4

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Fuses are important components used in electrical systems and circuits. Specialty fuses, such as BK/GBA-4, are designed to provide optimal protection. The application field and working principle of this particular type of fuse are described in detail below.

BK/GBA-4 Application Fields

BK/GBA-4 is a type of fast-blow, flat-plate, specialty fuse. It is typically used in microcomputer and communication power supplies, electric tools, laser power supplies, and other types of electronic equipment. Additionally, it can be used for protection in rolling stock and transportation systems. The BK/GBA-4 fuse is also suitable for AC/DC systems. However, its limitation on operating voltage and current limits its application to certain areas, such as environmental protection, TELCO systems, automotive, maritime, and military applications.

The operating voltage of the BK/GBA-4 is 32V and its current rating range is 1A - 20A. It is designed to open a circuit at a current over its rated value and temperature rising. Its cyclic and ripple current capacities are in compliance with the relevant international standards.

BK/GBA-4 Working Principle

The BK/GBA-4 fuse is a fast-blow, flat-plate fuse. Its working principle is based on Joule\'s Law, which states that the heat energy produced by current flowing through a conductor is equal to the square of the current multiplied by the resistance. This indicates that if the current passes a certain threshold, it will produce enough heat to melt the fuse\'s element and break the circuit in order to protect it from damage.

In the case of BK/GBA-4, the element is made of copper strip. When the current in the circuit rises to its rated value, the fuse element will melt and open the circuit. When the current drops to a current below the rated value, the fuse element will reset itself and the circuit is restored.

In order to further improve its working performance, BK/GBA-4 fuses also employ a number of other protective measures. These include a temperature response element, a core, a tin-plated shell, and an arc extinguisher. The temperature response element quickly responds to any increase in temperature, providing maximum protection. The core increases the contact force between the electrodes and the element. The tin-plated shell helps to prevent the fuse from shorting. Finally, the arc extinguisher helps to reduce the volume of gas generated during opening. These components work together to ensure that the fuse works accurately and reliably.

Conclusion

The BK/GBA-4 is a type of specialty fuse that is designed to provide optimal protection in various applications. Its application field is wide, ranging from microcomputer and communication power supplies to electric tools, laser power supplies, and other types of electronic equipment. Additionally, it can be used for protection in rolling stock and transportation systems. Its working principle is based on Joule\'s Law and it employs a number of protective measures, such as a temperature response element, a core, a tin-plated shell, and an arc extinguisher. These components work together to ensure that the fuse works accurately and reliably.

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