203-2-1-61-251-A-2-2 Circuit Protection

The application field and working principle of circuit breakers are an important and fundamental parts of electrical engineering. Circuit breakers are mechanical switching devices used to protect electrical circuits from over-current, over-voltage, over-power, and overheating that could otherwise cause a hazardous system breakdown. These devices are widely used in homes, businesses, and industries.

Application of Circuit Breakers

Circuit breakers are mostly used in homes and businesses as part of their electrical systems. They are used to protect against electrical shocks, and to protect wiring from overloads and short circuits. Circuit breakers are also commonly used in industrial settings, such as factories and large power plants. In these settings, the circuit breakers are used to protect machinery and power systems from over-current conditions that could damage or destroy equipment.

Definition of a Circuit Breaker

A circuit breaker is an electrical switch that is designed to be used in a circuit and can safely trip the circuit when it detects an overload or a short circuit. It is designed to perform the same task as a fuse but instead of having to be replaced it uses a reset mechanism to trip the circuit at a predetermined amperage level.

Working Principle of Circuit Breakers

The working principle of a circuit breaker is simple. Circuit breakers contain metal contacts that are connected to a spring-loaded mechanism. When an over-current or short-circuit is detected, the spring-loaded mechanism breaks and the moveable contacts release, opening the circuit. The spring also rewinds the contacts so they can be re-engaged when needed.

When the circuit breaker trips, a set of contact points close, sending an electrical signal to a circuit breaker panel. This signal activates the panel, which in turn indicates to the user that there has been an overload or short circuit. The user can then reset the breaker and the circuit will be restored.

Conclusion

Circuit breakers are important tools for protecting electrical circuits from overloads and short circuits. They are used in homes, businesses, and industries alike. They are relatively simple devices and operate on a simple working principle. Circuit breakers are an essential part of any electrical system and should be properly maintained and tested regularly.