Earth Leakage Circuit Breaker

An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock.

Earth leakage circuit breaker.

It detects small stray voltages on the metal enclosures of electrical equipment and interrupts the circuit if a dangerous voltage is detected. Generally the current sensing devices termed as rccb and voltage detecting devices named as earth leakage circuit breaker elcb. Means it detects the earth leakage current and. Current earth leakage current earth leakage circuit breaker current elcb.

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. As a general abbreviation elcb in our model name is denoted as nv. This also have the same function as mccb. The earth leakage circuit breakers are used in applications to prevent electrical shock and electrical fires that are caused by a short circuit or overload in the control panel with an automatic shut off when leakage is detected.

This kind of breaker is elcb rated 225 amp and less and is available to protect a motor and the associated wiring or conductors. The earth leakage circuit breaker elcb is used to protect persons against electric shock hazards and to prevent a fire. Forty years ago the first current eclbs were introduced and about sixty years ago the first voltage eclb was introduced. 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.

An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago.