AP12-1-71-752 Circuit Protection

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Circuit breakers are a vital component of any electrical system. They are designed to function as a switch, providing a critical link between components and helping to ensure the safety of anyone operating the system. The AP12-1-71-752 is a single-pole circuit breaker that is a common fixture in many industrial and commercial applications. This article will provide an overview of the application field and working principle of this circuit breaker.

Application Field

The AP12-1-71-752 is designed for industrial and commercial applications and is commonly used in places such as factories, hospitals, airports, malls, and office buildings. This breaker is highly reliable and is designed for long-term usage. It is also suitable for both AC and DC operation and can be used with a wide range of voltages.

The circuit breaker is robust enough to handle a wide range of power demands. It is rated for a current of up to 125A and can be used in applications with voltages as high as 690V (AC or DC). Additionally, it has a short-circuit current rating (Ics) of up to 55kA according to UL. This makes it suitable for a wide range of industrial and commercial applications.

Working Principle

The AP12-1-71-752 circuit breaker is designed around a temperature sensitive bimetal strip. This strip is designed to open the breakers’ contact terminals when it reaches a certain temperature which is set according to the demands it is expected to handle. This ensures that an overload or short-circuit can be rapidly detected and cut off to prevent further damage to the system.

The temperature of the bimetal strip also affects the pressure at which the contacts open. This allows the breaker to respond to a wide range of current demands and helps to ensure it can operate reliably over a long period of time. The pressure at which the contacts open is adjustable based on the specific requirements of the application.

The circuit breaker also features a closing time adjuster that is designed to ensure the switch closes quickly enough. This prevents the breaker from being exposed to high or dangerous currents for too long. It can also be adjusted to allow for specific requirements such as accommodating different power levels or restoring power in the event of a power drop.

Conclusion

The AP12-1-71-752 is a single-pole circuit breaker that is designed for industrial and commercial applications. It is highly reliable and is designed to operate safely over an extended period of time. The breaker utilizes a temperature sensitive bimetal strip to detect and respond to overloads and short-circuits. Additionally, it features an adjustable closing time adjuster that helps to ensure that power is restored quickly and safely.

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