Answer / sayan

MPCB:Motor Protection Circuit Breaker, which performs the
same function as that of an SFU.
MCB:Miniature Circuit Breaker, It also functions as a short
circuit prevention device. It can be 1,2,3,4 poles
depending on the requirement.

Answer / vinod

MPCB: all the bove full form are correct.
its also an breaker with inbuilt overload protection.
as per the cordination in the panel after contactor OLR is
needed to be provided.if we are using MPCB there is no need
for overload relay.

MCB: Minature circuit breaker.
this limit it is available up to certain breaking
capacity.can be used for lower breaking capacity

Answer / ravikant sahu

MPCB : Motor Protection Circuit Breaker.It is protect from
over load,Short circuit & Single Phasing also.

MCB : Miniature Circuit Breaker give protection from over
load & short circuit Only.

Answer / jayaseelan

mcb
thermal overload,sort ckt protection
mpcb
thermal overload,sort ckt protection,olr adjustment

anyother answers welcome...

Answer / dharmendra

MPCB have selectable range.
MCB has fixed ratting.

Answer / naveen kr.mishra(03-08-1987)

Hi friends, The every answer are correct but no body wrote
about the single phasing protection that is second portion
of Question clearly.
Answer-
MPCB will not protect to motor during single phasing
accuratly.It can do moulfunction during single phasing.
So normally MPCB dose do sufficient for single phasing.
Thanks

Answer / supreet virdee

Basically MPCB is used to protect motors from malfunctionng
and from overload whereas MCB does not work on three phase,
provides insufficeint protectin by only tripping the
cirrcuit.
MPCB can be used on three phases R,Y,B and provides full
protection to the motor n avoid it from burning.

Answer / atul

The question is still not clear to me......
as.
1). MCB protects from overloadin,short circuit..
2). MPCB protects from overloading,short circuit and motor disconection...in all of the above cases it will trip....nd moreover the main dfrnc btwn mcb nd mpcb is dat mpcb is provided with auxiliary cntacts(normally open nd normally closed)basically mpcb is connected with cntactors to provide two cmponent starting.......nd mpcb ranges r variable it can be set from frnt bt mcb is set for a fixed rating....

Answer / saleem

MPCB:Motor protection circuit breakar(3 phases)
MCB:Meniator circuit breakar (Single phase)

Difference between shunt, PMG and AREP excitation. Which is the most reliable between PMG and AREP.

0 Answers   ABB,

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,

Why PT is fitted in incomer panel.....?

1 Answers  

I am working in transmission network, one of my 66kv line having short distance about 6km, when sending end voltage is 67kv receiving end get 69kv, i want to know that, does distance affects in this matter, please explain in this matter & if possible answer me on my mail id, kaushikkumar.vanavi@getcogujarat.com, kaushik.vanavi@gmail.com

5 Answers  

What is transister define the transister ammiter ,base, colector.

0 Answers  

Define the term Capacitance and Inductance?

0 Answers  

which type of capacitor store high amount of energy for long time ? ( polarized or unpolarized )

1 Answers  

what is the basic difference between fan and home motor if both have single phase induction motor?

4 Answers   Engineers India Limited,

what is the full form of ka (100A mccb KA)

1 Answers  

what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

0 Answers  

tell me the various standerd of CT ratio

1 Answers   ICA,

why do the alternator doesnt have open circuited windings in armature???

1 Answers