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Circuit breakers have been around for a long time but nobody really realises why all of these electrical components actually come in useful.

Brief History

The very earliest form of the circuit breaker was actually talked about by Edison in a patent application back in 1879 so the idea has been around for a long time. Edison’s idea was to protect lighting circuit wiring from accidental short-circuits and overloads.

What They Do

All circuit breakers big or small have something in common when it comes to their operation but it does of course depends on the voltage class and the type of the circuit breaker itself.

The circuit breaker will not jsut shut the power off for no reason so do not get annoyed if it does this, it will do it if there is something wrong. Once the fault has been found, contacts within the breaker will open up to stop the circuit. Some of the smaller ones can be manually used to shut off the electricity at a fast rate.

An arc is created if a current is interrupted and this will actually be contained, cooled and then taken away in a very controlled way. This enables the gap between all of the contacts to continue which is always good.

Saving Lives

So believe it or not these circuit breakers actually save thousands of lives every single year. In the average home people tend to plug loads of appliances in to the same place which is when the problem starts to occur. It could actually be very easy for a fire to start if too many appliances are plugged in to the same place. This fire could potentially then burn the entire house down which is something that can be avoided if you had that circuit breaker. The circuit breaker will cut off all of the power before a fire starts.

So although you may not think all of those mil spec cables are important it would seem that they are.