what are the differences between MCB and MCCB ?
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Answer Posted / p. naik
MCB is acircuit-breaker which can provide protection only
in the cases of shor-circuit.They can only be operated
manually. MCCB's have provisions for both under/over
voltages, it has provisions for motr mechonism to be fitted
on it, which allows us to operate them electrically. MCCB's
have chnge over(NO & NC)contacts for both SD(faults) and SDE
(electrical faults) which can be utillised for providing
fault indication lamps. MCCB's have higher ratings than
MCB's. MCB's of diffrent types are B-curve(lighting
loads),C-curve(motors),D-curve(capacitive).Both operate in
almost a simillar manner having a fixed & moving contact,
but MCCB's been with more "ACCESSORIES".
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