please..i want to ask about mcb mccb and acb thx

Rated current rating of ACB
= 4000A, 3200A, 2500A, 2000A, 1600A, 1250A, 1000A, 800A, 600A

Rated current rating of MCCB
=630A, 500A, 400A, 300A, 250A, 200A, 160A, 120A, 100A, 80A, 63A, 40A, 32A, 25A, 16A

Rated current rating of MCB
= 63A, 50A, 40A, 32A, 25A, 20A, 16A, 13A, 10A, 6A

Not all manufacturer of the ACB / MCCB / MCb got all these rating. Some manufacturer might failed to provide some rating ....

You might found some rating found in both MCCB and MCB lists, like 32A.
Selection of MCCB and MCB in that rating depends on
1. shorting circuit breaking capacity
2. fault level
3. discrimination