UPGB111-8220-2 Circuit Protection

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Circuit Breakers - UPGB111-8220-2 application field and working principle

Circuit breakers are an important electronic component in our daily lives. They are used for a variety of applications such as to protect and disconnect electrical devices in the event of a power surge, preventing electricity from damaging the devices or people who may be in contact with them. They are also used to open and close electricity circuits, and to monitor and manage the power load on a circuit.

The UPGB111-8220-2 is a type of three-phase circuit breakers specifically designed for medium voltage applications. It has a load break rating of 20A, and a short circuit rating of 80kA, making it suitable for applications such as the protection of medium voltage motors, transformers, cables, and other electrical equipment.

The UPGB111-8220-2\'s working principle is based on the use of three poles. Each pole has a separate set of working contacts and arc quenching devices. The working contacts are connected in series with the load and, when energized by an external power source, make and break the circuit. When the load current reaches the trip setting, a thermal-magnetic device is pulled in to open the contacts and break the circuit. This is the function of the circuit breaker\'s arc quenching devices.

In addition to its primary purpose of protecting against short circuits and overcurrents, the UPGB111-8220-2 circuit breaker can also provide overvoltage protection. It is also equipped with a fault indicator which gives the user an indication of when there is a problem with the circuit breaker. This built-in indicator helps the user in determining whether the circuit breaker needs to be checked, repaired or replaced.

The UPGB111-8220-2 circuit breaker is a great option for a wide range of applications. It can provide reliable protection for medium voltage equipment, as well as provide an indication when there is a problem with the circuit breaker. This type of circuit breaker is a great choice for a variety of electrical systems, ranging from industrial to residential.

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