Earth Leakage Circuit Breaker

Early earth leakage circuit breakers are voltage detecting devices which are now switched by current sensing devices rcd rccb.

Earth leakage circuit breaker.

Means it detects the earth leakage current and. For many years the voltage operated elcb and the differential current operated elcb were both referred to as elcbs because it was a simpler name to. An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock. An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago.

This also have the same function as mccb. Generally the current sensing devices termed as rccb and voltage detecting devices named as earth leakage circuit breaker elcb. The earth leakage circuit breaker elcb is used to protect persons against electric shock hazards and to prevent a fire. Earth leakage circuit breaker elcb is a molded case circuit breaker used in a low voltage ac circuit to provide electrical shock protection and prevent fires from leakage current.

It detects small stray voltages on the metal enclosures of electrical equipment and interrupts the circuit if a dangerous voltage is detected. If any current leaks from any electrical installation there must be any insulation failure in the electrical circuit it must be properly detected and prevented otherwise there may be a high chance of electrical shock if anyone touches the installation an earth leakage circuit breaker does it efficiently. Current earth leakage current earth leakage circuit breaker current elcb. As a general abbreviation elcb in our model name is denoted as nv.

Forty years ago the first current eclbs were introduced and about sixty years ago the first voltage eclb was introduced.