DIFFERENCES BETWEEN FUSE AND MCB
Electric fuse | Miniature Circuit Breaker |
Whenever excessive current flows through the fuse, the conducting material inside it melts down thereby interrupting the current flow. | An electromagnetic mechanism present inside the MCB helps it to instantaneously interrupt the current flow during faults. |
Fuses other than rewireable fuses cannot be reused. | Miniature circuit breakers can be reused after the clearance of faults. |
Fuses act faster than MCB. Typical tripping time 2ms. | Tripping time for MCB is 20ms. |
Fuse is cheaper than MCB. | MCB is costlier than a fuse. |
The mode of operation is completely automatic. | The mode of operation is manual as well as automatic. |
The Characteristic curve shifts because of the ageing effect. | The characteristic curve does not shift. |