Answer / muhammed siraj khan

RCCB:residual current circuit breaker (RCCB)
It measures the difference in current between live
and neutral conductors of a system.In normal conditions it
is equal,If not than it indicates that some faulty current
is flowing other than live and neutral and result in
tripping the device/circuit
simple.
ELCB:
Detects faulty currents passing from live to the earth wire.
ELCB Will not work properly if the earthing is impropoer
Note: For tripping the ELCB,all equipment body should be
earthed.

Answer / byjul rahman

• ELCB is the old name and often refers to voltage
operated devices that are no longer available and it is
advised you replace them if you find one.
• RCCB or RCD is the new name that specifies current
operated (hence the new name to distinguish from voltage
operated).
• The new RCCB is best because it will detect any
earth fault. The voltage type only detects earth faults
that flow back through the main earth wire so this is why
they stopped being used.
• The easy way to tell an old voltage operated trip
is to look for the main earth wire connected through it.
• RCCB will only have the line and neutral
connections.
• ELCB is working based on Earth leakage current. But
RCCB is not having sensing or connectivity of Earth,
because fundamentally Phase current is equal to the neutral
current in single phase. That’s why RCCB can trip when the
both currents are deferent and it withstand up to both the
currents are same. Both the neutral and phase currents are
different that means current is flowing through the Earth.
• Finally both are working for same, but the thing is
connectivity is difference.
• RCD does not necessarily require an earth
connection itself (it monitors only the live and
neutral).In addition it detects current flows to earth even
in equipment without an earth of its own.
• This means that an RCD will continue to give shock
protection in equipment that has a faulty earth. It is
these properties that have made the RCD more popular than
its rivals. For example, earth-leakage circuit breakers
(ELCBs) were widely used about ten years ago. These devices
measured the voltage on the earth conductor; if this
voltage was not zero this indicated a current leakage to
earth. The problem is that ELCBs need a sound earth
connection, as does the equipment it protects. As a result,
the use of ELCBs is no longer recommended

Answer / muhammed k

ELCB means earth leakage circuit breaker which operates when
there is a leakage of current from phase to earth.Its only
for earht leakage protection and not for load or CKT
protection.it will not MCB function.But
Rccb means residual current circuit breaker which operates
when there is a difference in current between any two
phases.This differential current is called resdual current.

Answer / stephen nadar , p.k.kudiyirupp

elcb means earth leakage circuit breaker which operates when
there is a leakage of current from phase to earth.
Rccb means residual current circuit breaker which operates
when there is a difference in current between any two
phases.This differential current is called resdual current.

Answer / manimaran

residual current circuit breaker is an electric protection
device.disconnect the healthy part of the system when it
will be detect the unbalance current present in circuit.

Answer / shubham agrawal

ELCB is the old name and often refers to voltage operated
devices that are no longer available and it is advised you
replace them if you find one.
RCCB or RCD is the new name that specifies current operated
(hence the new name to distinguish from voltage operated).
The new RCCB is best because it will detect any earth
fault. The voltage type only detects earth faults that flow
back through the main earth wire so this is why they
stopped being used.
The easy way to tell an old voltage operated trip is to
look for the main earth wire connected through it.
RCCB will only have the line and neutral connections.
ELCB is working based on Earth leakage current. But RCCB is
not having sensing or connectivity of Earth, because
fundamentally Phase current is equal to the neutral current
in single phase. That’s why RCCB can trip when the both
currents are deferent and it withstand up to both the
currents are same. Both the neutral and phase currents are
different that means current is flowing through the Earth.
Finally both are working for same, but the thing is
connectivity is difference.
RCD does not necessarily require an earth connection itself
(it monitors only the live and neutral).In addition it
detects current flows to earth even in equipment without an
earth of its own.
This means that an RCD will continue to give shock
protection in equipment that has a faulty earth. It is
these properties that have made the RCD more popular than
its rivals. For example, earth-leakage circuit breakers
(ELCBs) were widely used about ten years ago. These devices
measured the voltage on the earth conductor; if this
voltage was not zero this indicated a current leakage to
earth. The problem is that ELCBs need a sound earth
connection, as does the equipment it protects. As a result,
the use of ELCBs is no longer recommended.

Answer / satishpatel

Which switch good ?

Answer / soumya ranjan bidyadhar behera

ELCB(earth leakage circuit breaker) is a device that is used to detect a leaking current from an installation when the power is cut, while RCCB(residual current curcuit breaker) or RED(residual current device) is an electric device that disconnects the power when the flow of power is not balanced at phase.

Answer / praveen

elcb detects the current flow when there is a leakage to the ground

rccb detects the current flow when there is a leakage between the phase

Answer / ganesh

BOTH ARE EARTH LEAKAGE PROTECTION DEVICE.ELCB IS FREQUNETLY NAME USED IN USA.ELCB IS THE EARLIER EARTH PROTECTION DEVICE.RCCB IS A NEW PROTECTION DEVICE.IN RCCB AGAIN TWO DEVICE THAT ARE RCCB AND RCBO.IN RCBO IN ADDITION TO EATH PROTECTION OVER CURRENT PROTECTION ALSO PRESENT.I HOPE NO DIFFERENCE BETWEEN THOSE.

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