Miniature Circuit Breaker Diagram. A breaker is a resettable protective device that protects against two types of overcurrent situations. This results in a parting of the contacts.
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A miniature circuit breaker basically is an electromagnetic device that automatically operates or breaks the circuit if the current in the circuit reaches to a predetermined value. When this strip is heated to its threshold temperature it bends enough to unlatch a mechanism and open the breaker s electrical contacts. Mcb miniature circuit breaker construction on photo.
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All are arranged in series. A miniature circuit breaker basically is an electromagnetic device that automatically operates or breaks the circuit if the current in the circuit reaches to a predetermined value. The trip curve of an mcb s b c d k and z curves tell us about the trip current rating of miniature circuit breakers trip current rating is the minimum current at which the mcb will trip instantaneously. It can replace conventional rewirable fuse in distribution board and are designed to operate accurately under both overloading and short circuit conditions.
