State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch.

State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch. 
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3 Answers

Answer :

i) MCCB : Molded Case Circuit Breaker (MCCB) is a circuit breaker and trip device assembled in a mould case. Also it can automatically cut off electric power in case of overload and short circuit.


ii) Function of ELCB : The ELCB detects fault currents from live to the Earth (ground) wire within the installation it protects.


iii) Function of MCB : Miniature circuit breaker operates automatically at the time of fault or over load. And it is used for the protection of electrical installation. 


iv) Switch : The purpose of a switch in a series circuit is to make it easy to open or close the electrical circuit, turning the flow of electricity on or off

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Answer :

MCCB, ELCB, MCB, Switch

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Answer :

i) MCB: Provide short circuit protection & over load protection to electrical loads. 

ii) ELCB: Provides protection by detecting the unsafe magnitudes leakage currents flowing to earth and disconnecting the supply to the circuit. 

iii) Fuse: Provides short circuit & occasionally over current protection depending on its size and related circuit rating. 

iv) Switch: Make and break the electrical connection to the load manually.
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