The difference between a circuit breaker and an arc-fault/ground-fault circuit breaker

In this simple demo conducted at Eaton Corp.'s Power Systems Experience Center, Dan Carnovale explains what an arc fault is and why there is such a big deal made about detecting arc faults in circuits. Also explained are the components added to an ordinary circuit breaker that go into detecting both arc faults and ground faults.

[meo]

Great Explanation. Also, loved being able to see inside the breakers. Thanks

[IndependentThinker]

So why do they cost so damn much? It looks like a simple circuit board and capacitors. Pennies to manufacture. Somebody is getting rich.

[Vision]

how can this prevent nuisance tripping?

[Mrcaffinebean]

Great demo, these dual faults should be mandatory everywhere assuming they work well.

[rjwilson]

All good till you try to run a power saw .