Difference between Fuse and Circuit Breaker:
The difference between fuse and circuit breaker is given in table below
| S. No. | Particulars | Fuse | Circuit Breaker |
| 1 | Functions | It performs both of functions—detection as well as interruption. | It performs the function of interruption only. Fault is detected by relay system provided for this purpose. |
| 2 | Operation | Inherently complete automatic. | Elaborate equipment, such as relays, are required for automatic action. |
| 3 | Operating Time | Very small (say 0.002 second or so) | Comparatively large (0.02-0.05 second). |
| 4 | Breaking Capacity | Small. | Very large. |
| 5 | Replacement | Needs replacement after every operation. | No replacement after operation. |