CB123-20B

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Circuit breakers play an important role in electrical systems as they are designed to protect an electrical circuit from short-circuiting or overload. One of the most common types of circuit breaker is the CB123-20B, which is used in industrial applications. In this article, we will discuss the application field and working principle of the CB123-20B.

The CB123-20B is a medium voltage circuit breaker rated for up to 3,000 volts and has a current rating from 200 to 2000 amps. It is designed for use in industrial applications where medium voltage protection is needed. Common applications for this type of circuit breaker include large factories, power distribution and control systems in factories, and substations supplying power to factories or commercial establishments. The CB123-20B is also suitable for distributed energy systems since it can be used to protect both AC and DC systems.

The working principle of the CB123-20B is based on the same principles as other circuit breakers, which is to detect and interrupt an overcurrent. When an overload or short-circuit occurs, the breaker trips, or opens the circuit, preventing the current from flowing. The CB123-20B uses electromagnetic relays to detect an overload or short-circuit and then trips the breaker. The relays in the breaker are designed to be highly sensitive to overcurrents, which allows the breaker to quickly trip and protect the circuit from damage.

The CB123-20B also features a Surge Protection Device (SPD) that is designed to protect the breaker from surges. The SPD works by detecting when an abnormal surge of current is flowing through the circuit and then trips the breaker to prevent the surge from reaching sensitive components in the circuit. The SPD can also be used to protect against over-voltage, under-voltage and reverse polarity.

The CB123-20B is a reliable and cost-effective solution for medium voltage protection in industrial applications. It is designed to protect circuits from short-circuits and overloads while also providing surge protection. The breaker is highly sensitive to overcurrents, allowing it to quickly trip and protect the circuit from damage. The Surge Protection Device also helps to protect sensitive components in the circuit while providing additional protection against over-voltage, under-voltage and reverse polarity.

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