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There are two main reasons that a breaker might not reset. One is mechanical failure in the breaker itself. If this is the case the breaker has to be replaced. The other reason that the breaker might not reset is that the breaker is doing its job and still senses an overload when the breaker is switched back on after an overload trip.

To check the breaker as to which fault is occurring disconnect the load conductor from the breaker. Try resetting the breaker. If it will not reset then it is a mechanical fault. If the breaker resets with the load conductor off then shut the breaker off, reconnect the load conductor and turn the circuit back on.

If it trips this time then there is a fault in the circuit and it has to be located and repaired before the circuit is put back into service. You might need an electrician to troubleshoot the circuit depending on what equipment the circuit controls.

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โˆ™ 2016-06-20 17:15:07
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โˆ™ 2018-03-29 05:44:50

Circuit breaker is to break the circuit in case of a fault. if the fault occurs and the sensing devices trigger the breaker, then breaker will not stay on.

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Q: Why might a circuit breaker not stay on?
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What is a difference between 10KA and 22KA circuit breakers?

The previous answer is incorrect, and I would advise that user to not give out information if they are going to give completely misguided information. The interrupting rating of a breaker is the maximum current that the breaker is designed to handle, at the breaker's rated voltage, before damage will occur to the breaker. A breaker will trip at FAR LESS than the interrupting rating, but it is extremely dangerous to expose the breaker to any situation where it will have more than the rated interruption current. the breaker is designed for. The reason some breakers are rated at 22kA instead of 10kA is because they typically have far larger conductors hooked up to them, so with the lowered impedance on the circuit there is more of a chance for the breaker to experience a higher fault current at the breaker. So electricians install 22kA breakers to handle the higher "available fault current."

What would cause circuit breaker to trip in new box from old box?

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What is a Circuit breaker and explain type circuit breakers?

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What is the use of breaker?

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What are the uses for a circuit breaker?

A circuit breaker protects the devices and wiring that is a permanent part of the circuit. Devices you connect to the circuit externally should be protected by their own over-current devices. If you didn't have a breaker and there was a short circuit inside your house then your house would try and draw all the current available from the power company until breaker up the line started tripping. By that time your house might already be burning down.