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Why might a circuit breaker not stay on?

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

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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Related Questions


No. A circuit breaker is like a fuse, it protects a circuit from a catastrophe if a dead short should occur.



Circuit breakers are designed based on voltage and current ratings required. The circuit breaker opens by an electromagnetic action though the control circuit might be digital or analog. For a 10KA circuit breaker if the current in the circuit exceeds 10KA then a control signal will be given to the circuit breaker then by electromagnetic action the circuit breaker opens the circuit. So a 10KA circuit breaker opens the circuit when current in that circuit is greater than 10KA, in the same way a 22KA circuit breaker opens the circuit when the current in that circuit is more than 22KA. For example the circuit breaker is controlled by a digital circuit. The current in the circuit is measured continuously and compared with the rating of the circuit breaker, for example if it is a 10KA circuit breaker then the current measurement is compared with the 10KA and if the measurement in the circuit is more than 10KA then the control signal will be sent to electromagnetic circuit to open the circuit breaker.


A circuit breaker is a switching device which can make,brake and carrying (or trip the circuit) that specified over currents for a small interval of time . There is a different types of Circuit Breaker's are there 1.According to their arc quenching media these are divided into 4 types a) Oil circuit breaker b) Air blast circuit breaker c) SF6 circuit breaker d) vacuum circuit breaker 2. According to their services the circuit breaker can be divided as a) Outdoor Circuit Breaker b) Indoor Breaker 3. According to the operating mechanism of circuit breaker they can be divided as a) Spring operated Circuit Breaker b) Pneumatic Circuit Breaker c) Hydrolic Circuit Breaker 4. According to the voltage level of installation these are divided into 3 types a) High Voltage Circuit Breaker b) Medium Voltage Circuit Breaker c) Low Voltage Circuit Breaker.



Look for the cause of the trip and correct. Reset the circuit breaker. If it continues to trip it might be an overloaded circuit, loose connections in the circuit, or a short in the wiring somewhere.


handling the circuit breaker


The generator circuit breaker or gcb is a circuit breaker which is connected with the generator . Whenever there is a fault in the generator the circuit breaker trips and disconnects the generator from operation thus it helps the place from a serious accident etc..


is there an error if the upstream circuit breaker is 16A TP and the downstream circuit breaker is 16A TPN?


No, a circuit breaker is a safety device that is used in a circuit to limit the amount of current in an overload or short circuit condition. The number on a breaker is the top end current that the breaker will handle before opening the circuit.


A non-auto circuit breaker is a circuit breaker with the trip element removed. Basically, it is a modified circuit breaker that is now a disconnect switch (glorified disconnect switch).


Making capacity of a circuit breaker is the maximum current which the breaker can conduct at the instant of closing. Breaking capacity of the circuit breaker refers to the maximum current that the circuit breaker can interrupt.


The need to de energize the circuit the breaker is feeding is a cause to have a circuit breaker switched off. If you are referring to a breaker tripping off, the cause would be from an overload condition being applied to the circuit, the breaker sensing it and shutting the circuit off.


An electric circuit breaker is switch that is used to protect electrical circuit from a short circuit or overload.


circuit breaker is break the electrical circuit .circuit gear is generator analyzer


A circuit breaker does not have a wire fuse in it.


A circuit breaker is classified as electrical equipment.


There isn't, the contacts in a circuit breaker are plated with silver.


A circuit breaker will trip if it is faulty or if the connected circuit has a short circuit or a connected device is trying to draw more current than the breaker rating. If you disconnect the output wire from the breaker and it still trips, it is a faulty breaker. If the breaker is tripping immediately when it is turned on then start disconnecting elements of the circuit to see what might be causing the problem. If everything was working and now isn't, it is likely that the wire from the breaker is nicked where it exits the box and is shorting to the feedthru connector.


A circuit breaker is an automatically operated electrical switch.Its protect an electrical circuit from damage over load and short circuit. A circuit breaker can be reset to resume normal operation.AnswerIt depends on the circuit breaker. A miniature circuit breaker, for example, contains a bimetallic temperature sensor (overload current protection) and a magnetic trip (short-circuit current protection). On the other hand a high-voltage circuit breaker contains no sensors but relies, instead, on external protective relays which, when activated, energise a trip coil within the circuit breaker, which trips the breaker.


Before you change a circuit breaker it has to be established that the breaker is at fault and not some other part of the circuit.


It depends what circuit you are making.Circuit breakers come in different 'ratings' and so are chosen according to the power demands of the circuit you have.You don't choose a circuit for a circuit breaker as such, you choose a circuit breaker according to what circuit you have made.


A small appliance circuit will be protected by a circuit breaker rated at 15 amps if the circuit wires are #14. If the circuit wires are #12 then a 20 amp circuit breaker could be used.


A circuit breaker is an overcurrent protection device. They are used everwhere from the miniature circuit breaker which protects a simple lighting circuit in your home, to huge circuit breakers that protect transmission lines.


Breaker or circuit breaker is a switch operated automatically by electricity. Breakers are designed to protect or to prevent an electrical circuit from short circuit or overloading.



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