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It is better to use Air Ckt Breaker than MCCB in higher load.In case of1600 A load we must use ACB.
1) ACB accuars more space than MCCB, so ACB Miantenance/troubleshooting can easily done.
2) ACB Making &/OR breaking contacts can be checked easily( Contact Resistance) during Testing/maintenance/Trouble-shooting.
3) ACB mechanism user-friendly as compared to MCCB.like it can be easily checked by racking-OUT in Isolated Condition.
4) In case of Heavy fault MCCB Contacts/Mechanism have more chances of damage as compared to ACB.
5) ACB have better ARC -Chute for quenching.
6) ACB are technologically upgrades as per as protection-relaying is concern.
7) Running current/ load display is available in ACB.
it is better to use ACB for rating over800A
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