The thermomagnetic circuit breaker is a device responsible for monitoring and controlling the electrical current, interrupting the flow of energy whenever it identifies a spike that exceeds what is considered appropriate. With this, the circuit breaker protects the electrical installation from short circuits and other problems related to electrical overload.
How does a thermomagnetic circuit breaker work?
In general, when we connect many electrical devices to the same outlet, the intensity of the electrical current passing through the circuit is increased. When this intensity exceeds what is anticipated by the electrical design, there is an electrical overload, which can cause short circuits, “burning” of devices, and even fires.
The action of the circuit breaker is based precisely on this intensity of electrical current and, upon detecting an overload, the device immediately cuts off the power supply to the location. For this, during its installation, the circuit breaker is calibrated to allow the use of up to a certain current value.
Before the popularization of circuit breakers, it was common for houses and establishments in general to use fuses. This method, however, was not as safe and required all fuses to be replaced whenever an electrical overload occurred.
