6720005330

Circuit breakers, such as the 6720005330 model, are an important and widely used type of electrical protection equipment, designed to help ensure the continuity and safety of electrical power supplies. The 6720005330 in particular is a 3-pole, 63A appliance suitable for AC automation in many types of applications. This article will examine its application field and working principle.

What is a Circuit Breaker?

Circuit breakers are electromechanical devices designed to protect electrical circuits against short circuits and overloads. When an electric current exceeds a certain threshold, they automatically disconnect the circuit, instantly interrupting the flow of electricity. For this reason, circuit breakers are referred to as ‘fuses’, as they both work similarly in a sense.

Application Fields

The 6720005330 is also suitable for a range of other applications aside from AC automation, including motor and lighting starters, and plug-in equipment. The appliance can be used in either domestic or industrial installations and is particularly suited for the installation of switchgear. It is even suitable for use in ‘hostile conditions’, as it provides basic overcurrent protection for contactors, transformers, motors, and other electrical equipment.

Working Principle of Circuit Breakers

A circuit breaker uses an electrical component known as a bimetallic strip to sense the presence of an overload or a short Circuit. When an overload is detected, the bimetallic strip heats up due to the changing electrical flow. This causes the strip to bend, and as a result, the circuit breaker trips. In the 6720005330 model, the bimetallic strip is simply triggered by a fuse element. The fuse is sensitive to temperature, so when the strip is overheated, it trips and opens the circuit breaker.

Safety Features

The 6720005330 is designed with an enclosed casing protecting the internal components from dust, dirt, and oil, designed to prevent accidental contact with the internal parts of the circuit breaker. Furthermore, the device is fitted with a temperature detent control, an open spring latch, and trip test pins for easy testing of operation. This makes it easier for professionals to work with the device, as they can easily check the functions and the safety of the device.

Conclusion

The 6720005330 model is a versatile and reliable circuit breaker, suitable for use in a variety of domestic and industrial applications. It is designed with an enclosed casing and safety features, making it ideal for installation in hostile environments. It features a bimetallic strip to sense temperature and current fluctuation, and also includes a trip test pin for easy operation testing. Overall, the 6720005330 is an effective and reliable electrical protection device.