Circuit Breakers

Circuit breakers are one of the most important components in power systems. They are used to protect equipment from power surges or other unexpected power issues. The JAEP-2-1-51-1-B1-300 is an example of a circuit breaker designed for medium-voltage applications. In this article, we will discuss the application fields and working principles of this circuit breaker.

Application Field

The JAEP-2-1-51-1-B1-300 medium-voltage circuit breaker is designed for use in industrial and commercial power systems with a voltage range between 12 and 38 kV. The breaker is most commonly used in applications where it is important to have an effective and reliable isolation system, such as in power distribution systems, industrial control systems, and distribution networks. It is also suitable for use in public utility systems and other applications where reliable voltage control is required.

Additionally, the JAEP-2-1-51-1-B1-300 circuit breaker is designed to be compatible with various control and protection systems. It offers advanced control features such as switching capacity, electric arc quenching, shunt trip, and motor protection. It also offers protection from overvoltage, undervoltage, and short-circuit.

Working Principle

The JAEP-2-1-51-1-B1-300 circuit breaker works by interrupting the current flow through the system whenever there is an overload or a short circuit. It does this through the use of an internal thermal-magnetic trip mechanism. This mechanism consists of two sensing elements. The first is a bimetallic disc, which is used to detect a rise in temperature caused by an overload. When the temperature reaches a certain level, the bimetallic disc relaxes and triggers the magnetic core of the breaker. This, in turn, causes the contacts of the breaker to open, creating an electrical circuit. The second element is a magnetic coil, which is used to detect an increase in current flow and then triggers the release of the contacts.

The JAEP-2-1-51-1-B1-300 circuit breaker also offers an additional layer of protection with its built-in overload protection. This is achieved by providing a minimum trip current setting for the bimetallic disc. If the current exceeds this threshold, the disc will relax and cause the breaker to trip, stopping the current flow.

Conclusion

The JAEP-2-1-51-1-B1-300 is a medium-voltage circuit breaker designed for industrial and commercial applications. Its main features are its protection from short circuit, overvoltage, and undervoltage and its compatibility with various control and protection systems. Additionally, it works through the use of a thermal-magnetic trip mechanism and offers an additional layer of protection with its built-in overload protection.