BK/MDL-20-R

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Introduction
Fuses are a specific type of circuit protection device commonly used in electrical systems. They are designed to automatically disconnect a circuit when an electrical current exceeds a threshold set by the manufacturer. The BK/MDL-20-R is an example of a popularly used fuse designed by Eaton. This article will discuss the application field of the BK/MDL-20-R as well as its working principles.

Application Field of the BK/MDL-20-R
The BK/MDL-20-R is a midget-sized fuse designed for use in a wide range of applications. It can be used in residential and commercial facilities, as well as in industrial processes. The fuse has an amperage range of 0.5A to 20A and is suitable for Class CC applications. It is UL Listed and rated as an RK5 fuse. The BK/MDL-20-R is also available in a UL Class CC design.

The BK/MDL-20-R is most commonly used in circuit protection applications, such as in the protection of circuit breakers, relays, contactors, and more. The fuse is also used to protect AC and DC motor control circuits, as well as time-delay, RMI, and time-delay/interrupt circuits. The BK/MDL-20-R is also suitable for a variety of other applications, such as in medical equipment, lighting, heating, audio, and video systems.

Working Principle of the BK/MDL-20-R
The BK/MDL-20-R works by disconnecting the circuit when the electrical current exceeds a predetermined and safe level. This is accomplished by using a melted, non-metallic or metallic, element in the fuse. When an electrical current passes through the fuse, it heats up the element until it melts. This interrupts the flow of current, thus disconnecting the circuit. The fuse is able to reset after the heat dissipates, thus restoring power to the circuit.

The BK/MDL-20-R is designed with a temperature-sensitive element that allows the fuse to trip at the desired rating. The element heats up faster when the current passes through it, and takes longer to cool down so the fuse remains disconnected—thus preventing further damage to the circuit.

The BK/MDL-20-R is also designed with built-in surge current protection. The fuse is designed with a clean and quick interruption of the power supply. This limits the surge current to a preset maximum, thus offering additional protection against damage caused by overcurrents.

Conclusion
The BK/MDL-20-R is a midget-sized fuse designed for use in a wide range of applications. It can be used in residential and commercial facilities, as well as in industrial processes. The fuse has an amperage range of 0.5A to 20A and is suitable for Class CC applications. It is UL Listed and rated as an RK5 fuse. The BK/MDL-20-R works by disconnecting the circuit when the electrical current exceeds a predetermined and safe level. This is accomplished by using a melted, non-metallic or metallic, element in the fuse. The fuse is also designed with built-in surge current protection, and is able to reset after the heat dissipates, thus restoring power to the circuit.

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