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Circuit breakers - fuses
- A circuit breaker is an electrical safety device that is installed in the electrical circuits of your house or any other building. Its main role is to protect the circuit against overcurrents and short circuits.
- When there is a sudden increase in electrical current in the circuit, the circuit breaker detects this overload and automatically trips to cut off the electrical supply. This helps prevent damage to electrical wires and avoid the risk of fire.
- The circuit breaker consists of a switch and an overload detection device. The switch can close or open the electrical circuit, while the detection device constantly monitors the current flowing through the circuit.
- When an abnormally high current is detected, the circuit breaker quickly reacts by cutting off the electrical supply. This happens through an internal mechanism that triggers the movement of the switch from the "closed" position to the "open" position, thus interrupting the flow of current.
- Once the issue is resolved, you can restore the power by manually resetting the circuit breaker. To do this, simply put it back into the "closed" position. However, it is important to understand the cause of the incident and resolve it before resetting the circuit breaker.
- Circuit breakers are often used in combination with
differential circuit breakers
to detect leakage currents, and they are typically grouped in
modular enclosures.
- In summary, a circuit breaker is an electrical safety device that protects electrical circuits by cutting off the power in case of overcurrent or short circuit. This helps prevent electrical damage and ensures safety in your house or building.