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Circuit Breakers

A circuit breaker is an electrical device used to protect electric circuits from overload, short circuits, and ground faults. It monitors the electrical current in a circuit and automatically trips the circuit when the current exceeds a pre-determined safe level. Circuit breakers are used in household, commercial, and industrial applications, and are available in a variety of different sizes and amperages.

Application Field

Circuit breakers are used to protect a wide variety of electrical circuits, from small residential circuits to large industrial systems. In residential applications, they are typically used to protect individual branch circuits, such as those supplying power to lights, receptacles, and appliances. In commercial and industrial applications, they are used to protect larger systems, such as those supplying power to factory machines and large data centers.

Working Principle

Circuit breakers work by monitoring the electrical current passing through the circuit. When the current exceeds a predetermined safe level, a trigger mechanism is activated which trips the circuit breaker, interrupting the flow of current. The trigger mechanism is typically a thermal or magnetic element which is sensitive to the amount of current flowing through the circuit.

Once tripped, a circuit breaker can either be reset manually or automatically. Manual reset requires a user to press the reset button on the circuit breaker, while automatic reset requires no user action. Once reset, the circuit breaker is ready to protect the circuit from future overloads, short circuits, and ground faults.

Circuit breakers are essential components in any electrical system, and provide protection from the possibility of fire or other damage that could be caused by an overload or ground fault. They are relatively inexpensive components, and the peace of mind that comes with knowing that they are protecting your home or workplace makes them a worthwhile investment.

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