Folllowings are advantage & disadvantage of MCCB & HRC FUse:
1) MCCB to be replaced once it trips on short circuit. Hence shut down for replacement of MCCB.
2) In PCC, Fault current is more, You must use Control fuse instead of MCB as fuse is rated for 80KA or 120KA while MCB is rated for 10KA or 15KA.
3) Wherever you use MCCB, MCCB with Earth fault protection release must be taken, otherwise MCCB will not trip on Ground fault and your Main breaker will trip. But if had use fuse, Fuse will blow off in case of Ground fault.
4)Fuse replace ment will take time.
5) Blowing of fuse of one phase crate single or 2 phase supply & burning of motor.
Jitendra A. Khetani