Describe the difference between fuse and MCCB.

Describe the difference between fuse and MCCB.
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1 Answer

Answer :

Sr. No
Fuse
MCCB
1 Fuse melts / fuses in case of excessive load.
MCCB trips off in case of excessive load.
2 Fuse needs to be replaced after every operation.
MCCB is to be just put ON after correcting the fault.
3 Porcelain base and top. Not attractive.
Compact, small and attractive.
4 Works on melting / fusing due to high temperature.
Works on bi–metal expansion or induced magnetism.
5 Relatively economical than MCCB.
Relatively costlier than fuse.
6 Simple in construction.
Complicated in construction.
7 Operating time is very small. (0.002 sec or so) 
Operating time is comparatively large. (0.1 to 0.2 sec) 
8 Risk in putting on the fuse element.(Unsafe)
No risk in putting “ON” the MCCB. (Safe).
9 Generally protects the load against short-circuit.
Generally protects the load against different types of faults.
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