1278970000

Circuit breakers are devices that are primarily used for the purpose of protecting electrical circuits, equipment and people from overcurrent or short circuits. They effectively “break” the circuit, de-energizing it and preventing the dangerous overload from occurring. Circuit breakers come in many sizes and configurations, and can be used in both low and high voltage applications. This article will focus on the 1278970000 application field and working principle of circuit breakers.

Application Field

Circuit breakers are usually used in three primary application fields: residential, commercial, and industrial. In residential applications, circuit breakers are used in panel boards and in combination Arc Fault Circuit Interrupters (AFCIs). When used in commercial and industrial applications, they are used mainly as safety devices to protect electrical systems and people from shocks, fires and damaged equipment. Circuit breakers are also used as switching devices, allowing both power and control signals to be switched on or off in an instant. This type of application field is particularly useful in controlling and regulating large motors, pumps, transformers and other electrical loads.

Working Principle

At their core, circuit breakers are equipped with an internal electric circuit of their own that is sensitive to current. If the current or voltage going through the breaker is too high, the internal circuit of the breaker will open, breaking the circuit. This prevents the current from continuing to overload the circuit and damaging the equipment connected to it. This same principle is also used in the commercial and industrial application fields, where the circuits are responsible for protecting both the equipment and people from shock or fire hazards.

The internal circuit of the circuit breaker is typically composed of two main components: an electromagnet and a spring-loaded contact arm. When power is applied to the breaker, the electromagnet is energized and the contact arm is pulled down, connecting the two main contacts. When the current running through the breaker exceeds the threshold value, the electromagnet is de-energized, and the spring-loaded contact arm is forced back up, opening the circuit.

Overall

Circuit breakers play an important role in protecting electrical systems and people from overcurrent or short circuit events. The 1278970000 application field and working principle of circuit breakers are specifically used in residential, commercial and industrial applications. Circuit breakers use an internal electric circuit of their own to detect high voltage or current levels, and de-energize the circuit when this limit is exceeded, preventing overloading damage.