MCB is miniature circuit breaker which is thermal oprated
and use for short circuit protection in small current
rating circuit. MCCB 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.
MCB – MINIATURE CIRCUIT BREAKER
MCCB – MODULE CASE CIRCUIT BREAKER
MCB RATING : 63 AMP (MAXIMUM) i.e. in the form of tpn(
THREE PHASE + NUETRAL)
MCCB _ 63AMP (min.)
MCB IS USED WHERE LOAD IS LOW BUT MCCB IS USED WHERE LOAD
IS HIGH AND USE AS INCOMER.WHILE THE MCB IS USED FOR
OUTGOING.