Circuit breakers are devices that protect electric circuits from overload electric current conditions. They do the same job as fuses, but they are not destroyed when activated. During overload conditions a circuit breaker will open the circuit to prevent overload, and potential damage, like fires. Circuit breakers contain a switch to return to the closed position after they have been flipped.
There are three main types of circuit breakers, they are listed in the table below.
|Circuit breaker type||Description|
|Thermal||Will respond to the excessive heat generating during overload current conditions.|
|Magnetic||Will respond to the magnetic field generated during overload current conditions.|
|Thermo-magnetic||Will respond to both the heat and magnetic field generated during overload current conditions. This is the circuit breaker equivalent to the slow blow fuse.|
For further information please see the related pages below: