BK/C520-4A

Application Field

The BK/C520-4A is a thermal-electric fuse that is typically used in residential and commercial applications. It is most commonly used in small appliances such as microwaves, toasters, and other electronic devices. It can also be found in larger industrial and automotive applications, such as large transformers, electric motors, and circuit breakers. It is especially well-suited for applications that require protection from short-circuits, temperature irregularities, or current overloads.

The BK/C520-4A is also suitable for various voltage and current levels, ranging from 250 volts to 690 volts AC, and 6 Amps to 100 Amps DC. It is available in a variety of sizes and styles, and has a temperature rating of between -50°C and +150°C. This makes it well-suited for both indoor and outdoor applications.

Working Principle

The BK/C520-4A is a thermal-electric fuse. It is designed to protect circuits and equipment from excess current caused by power surges or other problems. The fuse consists of two components: a stationary thermal element and a current-activated element, or plunger. This plunger works in conjunction with the stationary thermal element to monitor the current flowing through the fuse.

When the current reaches a predetermined level, the plunger is pulled to the side by the flowing current. As this occurs, the thermal element begins to heat up. Once it reaches a certain temperature, the thermal element will expand, which in turn causes the plunger to release and shut off the circuit. When the current is removed, the thermal element cools down and the plunger returns to its original position and the circuit is reset.

The BK/C520-4A is also designed to provide over-current protection under normal operating conditions. When the current exceeds the rated current of the fuse, the plunger will activate and the fuse will trip. Once the current is removed, the plunger will reset and the circuit will be restored.

Conclusion

The BK/C520-4A is an important safety device that is used to protect circuits and equipment from potential damage caused by excessive current. It is a thermal-electric fuse that is designed to both prevent and interrupt the flow of current. It is most commonly used in residential and commercial applications, and is suitable for various voltage and current levels. The BK/C520-4A is also designed to provide over-current protection, making it an ideal choice for a variety of applications.