What is MCB AND ELCB

Question

Accepted Answer

MCB stands for Miniature Circuit Breaker and ELCB stands for Earth Leakage Circuit Breaker.

MCB is an automatic switch that protects an electrical circuit from damage caused by overload or short circuit.
ELCB is a safety device used in electrical installations with high earth impedance to prevent electric shock.
MCB is used to protect individual circuits while ELCB is used to protect against electric shock.
MCB is commonly used in homes and offices while ELCB is used in industrial and commercial settings.
MCB trips when there is an overload or short circuit while ELCB trips when there is a leakage current.
MCB can be reset manually while ELCB needs to be reset after identifying and fixing the fault.
MCB is rated by current while ELCB is rated by sensitivity and time.

Accepted Answer

MCB - miniature cercit breaker

Elcb- earth licage cercit breaker

Popular interview questions of Electrical Technician