Earth Leakage Circuit Breaker (ELCB) works on the principle of

over load current

short circuit current

residual current

neutral current

Earth Leakage Circuit Breaker

Earth Leakage Control Breaker

Earth Leakage Current Breaker

Earth Leakage Component Breaker

before energy meter

after energy meter

at the entry of supply to load after energy meter

tail end of the installation

short circuit condition

ground fault condition

open circuit condition

over load condition

Residual Current Circuit Breaker

Residual Circuit Current Breaker

Residual Current Control Breaker

Residual Control Circuit Breaker