Answer / shvetang dave

MCB means miniature circuit breaker--It is thermal &
magnetic trip device operating upto 100 A. It's range is
fixed not selectable.

MCCB means Moulded Case Circuit Breaker---It is operated
upto 1000 A and High voltage MCCB also operates on 1200 A
also...And it's range is selectable..

ELCB means Earth Leakage Circuit breaker---It is operated
on leakage current only..It is not operated on short
circuit or overload current.

RCCB means Residual Current Circuti Breaker---it's Working
principle is same as ELCb..It is also operated on Leakage
current..Main differance between it and ELCB is that it is
also operated on Short circuit current

Answer / sarath chandran

Actually RCCB and ELCB have same function, thats tripping on
leakage current(spec is in mA). The recidual device which
trip on leakage current and short ckt is called RCBO.

Above furnished def for mcb n mccb are correct

Answer / lokesh ranjith

MCB mniature ckt breaker, trips when short ckt happens upto
100A
ELCB earth leakage ckt breaker trips whn short ckt happens
& earth leakage happens
MCCB moulded case ckt breaker upto 1000A
RCCB Rasidual case ckt breaker trips both earth leakage &
short ckt avail upto 100A

Answer / abobakkar

mccb-minurate current circuit breaker it used upto 1000A,
it should withstand that capacity
mcb-miniurate ciruit breaker it used upto 63A only for
light load.
elcb-earth leakage circuit breaker it used for any leakage
current in cable, then it should trip under earth fault

Answer / jamsheer koonari

MCB means Miniature Circuit Breaker-Operated up to 100A circuits

MCCB means Moulded Case Circuit Breaker-up to 1000A

ELCB means Earth Leakage Circuit breaker-operated only for leakage current.

RCCB means Residual Current Circuit Breaker-same as ELCB which is working for both leakage and short circuit.

Answer / panchanan nayak

MCB means miniature circuit breaker--It is thermal &
magnetic trip device operating upto 100 A. It's range is
fixed not selectable.

MCCB means Moulded Case Circuit Breaker---It is operated
upto 1000 A and High voltage MCCB also operates on 1200 A
also...And it's range is not selectable..

ELCB earth leakage ckt breaker trips whn short ckt happens
& earth leakage happens

ELCB earth leakage ckt breaker trips whn short ckt happens
& earth leakage happens

Answer / ardo

mccb :moulded case circuit breaker its operates up to 1200A
and have ratings or have no ratings of current selecting

mcb :miniture circuit breaker operates upto 1000A nad have
selectable current ratings

ELCB means Earth Leakage Circuit breaker---It is operated
on leakage current only..It is not operated on short
circuit or overload current.

how to find diesel consumption of 600kva DG per hours????

1 Answers  

power factor is max for which welding a.arc b.resistance c.gas

2 Answers   Bhel, HCL,

What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

20 Answers   Jindal, Pharma, TAAT, TATA,

is it necessary for 200 kva transformer to have marshaling box and cu plate earthing for neutral

1 Answers   Blue Star,

where to use 3.5 core and 4 core cables, will this vary for type of loads

1 Answers   KSBC, Medreich,

what is cogging and crawling

0 Answers   Suzlon,

If increased the frequency up to 1000 then what changes shows in voltage?

0 Answers  

My energy meter ratio is -/110/root 3,1A and connected line CT is 100/1,PT is 11kv/110 so what is the MF for meter

1 Answers   Apollo,

if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

0 Answers   NCC,

how to set relay setting? and example calculation...

0 Answers   JSW,

what is difference between 2 pole structure and 4 pole structure in transformer yard

0 Answers   Hospira,

Is it possible to run HT motor through LT VFD (LT VFD supply given to Transformer LT side and transformer HT side connected to motor)

1 Answers