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. 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. An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock. Forty years ago the first current eclbs were introduced and about sixty years ago the first voltage eclb was introduced. An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago.

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. Generally the current sensing devices termed as rccb and voltage detecting devices named as earth leakage circuit breaker 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. This also have the same function as mccb.

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. Earth leakage circuit breaker or elcb. It detects small stray voltages on the metal enclosures of electrical equipment and interrupts the circuit if a dangerous voltage is detected. As a general abbreviation elcb in our model name is denoted as nv.

The earth leakage circuit breaker elcb is used to protect persons against electric shock hazards and to prevent a fire.