Answer / shantanu dash

Miniature Circuit Breaker (MCB)has less short circuit with
stand current than MCCB( Moulded Case circuit breaker) or
MPCB( Motor protection Circuit Breaker).

Exp. MCB has short circuit withstand capacity of max. upto
10 KA. But MCCB/MPCB has fault withstand capacity from 25
KA to 50 KA or more.

Miniature circuit breaker comes in single pole/ two
pole/three pole/Four pole versions. but MCCB comes in
three/four pole version and MPCB comes in only three pole
version.

MCB Normally used in the lighting circuit. But MCCB is used
for feeder as well as motor protection having
Overload/short circuit/ earthfault protection in conjuction
with an additional over load relay. MPCB is only used for
Motor Protection.

Answer / soumya chatterjee

First of all if you want to mean MCCB please read Moulded
Case Circuit Breaker not Motor Control Circuit Breaker.
MCCBs are superior than MCB by virtue of its higher short
time current withstand capacity.

Answer / winner

MOTOR CONTROL CIRCUIT BREAKER(MCCB)IS MORE SENSITIVE THAN
MINIATURE CIRCUIT BREAKER(MCB).IN MCCB THE SHOT TIME
WITHSTAND CAPACITY IS HIGHER THAN MCB.THEN MCCB COST IS
HIGHER THAN MCB

Answer / gunasekaran

first one is automatic second one is relay oriented

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