whats the diff b/w mpcb and mcb?weather it trips on single
phasing or not.
Answers were Sorted based on User's Feedback
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.
Is This Answer Correct ? | 12 Yes | 5 No |
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
Is This Answer Correct ? | 6 Yes | 2 No |
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.
Is This Answer Correct ? | 7 Yes | 4 No |
Answer / jayaseelan
mcb
thermal overload,sort ckt protection
mpcb
thermal overload,sort ckt protection,olr adjustment
anyother answers welcome...
Is This Answer Correct ? | 11 Yes | 9 No |
MPCB have selectable range.
MCB has fixed ratting.
Is This Answer Correct ? | 5 Yes | 4 No |
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
Is This Answer Correct ? | 3 Yes | 3 No |
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.
Is This Answer Correct ? | 1 Yes | 2 No |
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....
Is This Answer Correct ? | 0 Yes | 1 No |
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