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Answer Posted / nagaraja
ACB-Air Circuit Breaker ,MCCB-Moulded Case Circuit Breaker.
ACB using for higher current ratings and MCCB using for
lower current ratings.
ACB works under voltage as well as over current,But MCCB
will not works Under voltage.Only over current(new mccb
having under voltage fecility also through closing coil
intrudusing)
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