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what is the maintain in ACB,VCB,MCB,MCCB breakers?
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Answer Posted / sajin rajan
VCB - VACCUM CIRCUIT BREAKER
ACB - AIR CIRCUIT BREAKER
MCCB - MOULDED CASE CIRCUIT BREAKER
MCB-MINIATURE CIRCUIT BREAKER
VCB IS NORMAY USED IN THE UPSTREAM SIDE i.e.HIGH VOLTAGE
SIDE FOR HIGH CURRENT,THE INSULATING MEDIUM OF THE
SWITCHING CONTACTS IS VACCUM.
ACB IS USED AT THE LOW VOLTAGE SIDE,INSULATING MEDIUM IS
AIR.
MCCB & MCB ARE USED IN THE DISTRIBUTION SIDE
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