Earth Leakage Circuit Breaker
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.
Earth leakage circuit breaker. An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago. 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. Current earth leakage current earth leakage circuit breaker current elcb.
An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock. 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 also have the same function as mccb. 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. Early earth leakage circuit breakers are voltage detecting devices which are now switched by current sensing devices rcd rccb. This kind of breaker is elcb rated 225 amp and less and is available to protect a motor and the associated wiring or conductors. 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.