9922120003 Circuit Protection

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Circuit breakers are one of the most important safety devices used in electrical systems. They are designed to prevent dangerous arcking and help protect wiring from overloading. 9922120003 is a type of circuit breaker that has been specifically designed for various applications. This article will discuss the application field and working principle of 9922120003.

Application Field of 9922120003

The 9922120003 is a 3 pole, 400 Amp, and 55,000 Amp Short Circuit Current Rating (SCCR) rated circuit breaker. It is certified to UL 489 standard for type L and type NC circuit breakers. It can be used in a variety of applications, including residential, commercial, and industrial. Some of the more common applications include elevators, air conditioners, mortuaries, and garages. It can also be used in places where space is a major concern, such as server rooms and data centers.

Working Principle of 9922120003

The 9922120003 circuit breaker is a type of thermal-magnetic circuit breaker. It works by using a bimetallic strip to detect current overloads. When an overload current flows through the bimetallic strip, the strip warms up and bends. This causes the pressure of the contacts to be released, breaking the circuit and tripping the breaker.

The 9922120003 also uses a magnetic trip unit to detect fault currents. When a short circuit occurs, the magnetic trip unit detects the surge in current and trips the breaker in less than 1 second, thus preventing further damage.

The 9922120003 includes an adjustable trip setting. This feature allows the user to adjust the current rating of the circuit breaker and ensure that it doesn\'t trip too often and that it has enough capacity to handle the load. This is particularly useful in industrial applications, as it allows the user to optimize the breaker for the specific application.

Conclusion

The 9922120003 is a 3 pole, 400 Amp, and 55,000 Amp Short Circuit Current Rated circuit breaker that is certified to UL 489 standard for type L and type NC circuit breakers. It can be used in a variety of applications, including residential, commercial, and industrial. It works by using a bimetallic strip to detect current overloads and a magnetic trip unit to detect fault currents. The 9922120003 also includes an adjustable trip setting. This feature allows the user to adjust the current rating of the breaker and ensure that it has enough capacity to handle the specific workload.

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