What is full form of CB?CB abbreviated circuit breaker is an electrical switches operate automatically which is used to protect an electrical circuit from damage due to excessive current flowing through it when the circuit is overload or short circuit.Basic function of circuit breaker is to interrupt current flow when the fault is detected
Full form of CB is Circuit breaker and it is an electrical switches which can be operated automatically or manually for controlling and protecting the electrical circuits.
Circuit breaker can be reset manually or automatically to resume the normal operation but a fuse cannot reset and must be replace.
Working Principle of Circuit Breaker
Circuit breaker consist of fixed and moving contacts Under normal condition these contacts touch each other and carry current with the rated value for which it is design.When the circuit breaker closed the current carrying contacts which is called electrodes engage each other under the pressure of a spring
Whenever a fault occurs at any part of the circuit, the current flow much in the tripping coil due to which the tripping coil of the breaker gets energized and as a result moving contacts are getting apart from fixed contacts by some mechanism, thus opening the circuit.
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