CB1921-30

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Circuit Breaker technology has improved greatly over the years, with the CB1921-30 being one of the most highly advanced models on the market today. This state-of-the-art breaker is an excellent choice for applications that require superior performance and reliability. In this article, we\'ll take a closer look at the application field and working principle of the CB1921-30.

The CB1921-30 has been designed to meet the needs of a variety of different applications, ranging from residential and commercial settings to industrial environments. It is capable of handling current ratings from 12 Amps up to 250 Amps, making it a versatile option for many users. The breaker is certified to UL 489, EN 60947-3, NFPA 79, and UL 1066, ensuring that it meets the highest standards of safety and performance.

The operation of the CB1921-30 takes place in two stages. During the first stage, the breaker is tripped when the current exceeds a set level. This allows for protection against short circuits and overloads. The second stage is responsible for opening the breaker when the current is at a threshold level.

The CB1921-30 is equipped with an adjustable trip time delay, which is adjustable from 0 to 30 seconds. This allows the user to customize the length of time that the breaker will take to open after it has been tripped. This feature also helps to minimize nuisance trips, as well as providing additional protection against surges and spikes.

The CB1921-30 also features a built-in ground fault sensing circuit, which can detect when the incoming power is unbalanced. If a fault is detected, the breaker will trip, cutting off the power. This provides another layer of protection against electrical hazards.

The CB1921-30 includes several additional features to improve user convenience and safety. One of these is a lock-out feature, which prevents the breaker from being accidentally re-set. This ensures that it remains locked until the underlying issue has been addressed. Another feature is an integral line-monitoring circuit, which can detect when the line voltage is too low or too high. The breaker will then open to prevent damage from occurring.

Finally, the CB1921-30 comes with a protective and diagnostic LED indicator, which provides the user with visual feedback about the status of the breaker. The indicator will signal when the breaker is open or closed, as well as alerting the user to any faults or possible problems. This feature helps to ensure that the breaker is always performing optimally.

In conclusion, the CB1921-30 is a powerful, reliable circuit breaker that is ideal for a range of applications. It includes a range of features to protect against electrical hazards, as well as providing convenience and reliability to the user. By understanding the application field and operating principle of the CB1921-30, users can make sure they are getting the most out of their investment.

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