Answer / nilkanth tailor

MCB stands for MINIATURE CIRCUIT BREAKER with rated current
below 100 amperes whereas MCCB stands for MOULDED CASE
CIRCUIT BREAKER with rated current from 10 amperes to 2000
ampers.MCB has breaking capacity upto 10kA, MCCB has
breaking capacity above 10kA.

Answer / sms

MCB is miniature circuit breaker which is thermal oprated
and use for short circuit protection in small current
rating circuit. MCCB is moulded case circuit breaker and is
thermal operated for over load current and magnetic
operation for instant trip in short circuit condition.
Under voltage and under frequency may be inbuilt. Normally
it is used where normal current is more than 100A.

Answer / d.sathya

MCB ( miniutare Circuit Breaker )

Answer / thanigai1984

MCB - MINIATURE CIRCUIT BREAKER with rated current
below 100 amperes whereas MCCB - MOULDED CASE
CIRCUIT BREAKER with rated current from 10 amperes to 2000
ampers.

Answer / faizal

MCB - miniature circuit breaker

1) we can use it upto 100A
2) thermally operated and used for short circuit/ overload protection
3) trip current / trip characteristics not adjustable it is fixed

MCCB - moulded case circuit breaker

1) we can use it above 100A
2) used for short circuit/ overload protection
3) thermal trip protection for over load current
4) magnetic trip protection for short circuit ( instant operation )
5) trip current / trip characteristics is adjustable

Answer / nag

mcb mean miniature circuit breaker and mccb mean moulded
case circuit breaker .mcb is used for upto 16A and mccb
used for above 16A .it means it is capable for higher
currents .

Answer / sandeep durga

Miniature circuit breaker

What are the main faults of DC generators?

0 Answers   Mercantile Marine Department,

what is the difference between gas group b and gas group c electrical equipment construction wise?

0 Answers  

5MVA TRANSFORMER SUDDENLY FAIL WITH THE PRV TRIPPING AND LARGE AMOUNT OF OIL SPREAD OUT? SO IT CAME BACK WITH THE REPAIRING WITH REASON THAT IT FAILS BCOZ OF TRANSIENT EFFECT? SO PLZ EXPLAIN HOW DOES IT HAPPENED?

1 Answers  

11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

10 Answers   Pfizer,

WHAT IS THE DIFFERNCE BETWEEN AIS AND GIS IN SWITCH GEAR?

5 Answers   L&T,

what is transformer

5 Answers   Aegis,

how do we calculate length of starting time and repeated starting of a direct online starter?

0 Answers  

what is the maximum load sutiable from earth to phase and what is the max voltage earth to phase suitable

1 Answers  

What is a system?

0 Answers  

In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)

0 Answers  

why field rhoestat is kept in minimum position while armature rheostat at maximun position?

3 Answers  

How does MCB operate without relay..?

10 Answers   Toyota,