Being an electrical engineer, I would like to explain the difference between a fuse and a circuit breaker. A fuse works based on the thermal and electrical properties of the material it is made of, while a circuit breaker operates using electromagnetic force and a switching mechanism. There are quite a few differences between the two, and I have shared the main ones to help you get a better understanding.
What is the Difference Between Breaker and Fuse?
You might be wondering how a fuse is different from a breaker, here is a quick comparison
Basis | Fuse | Circuit Breaker |
Working Principle | Melts when overheated to stop current flow. | Uses electromagnetism to trip and stop the current. |
Reusability | One-time use; needs to be replaced after blowing. | Can be reset and used again after tripping. |
Indication | Doesn’t show any sign when it blows. | Shows clear ON/OFF or tripped status. |
Switching Use | It can’t be used to turn power on or off. | It can be used like a switch for turning circuits on and off. |
Protection Type | Mostly protects against overloads. | Protects against both overloads and short circuits. |
Function | Detects and breaks the circuit itself. | A circuit breaker only breaks the circuit; fault detection is handled by a separate relay system. |
Breaking Capacity | Lower breaking capacity. | Higher breaking capacity. |
Operating Time | Trips very fast, usually within milliseconds. | Slightly slower response compared to fuse. |
Cost | Cheaper | More expensive |
Operation | Fully automatic, works once and then needs replacement. | Can work both automatically and manually. |
Here are the key differences between fuse vs circuit breaker. Hope this helps you get the idea.
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What is the Difference Between a Fuse and a Circuit Breaker?
Thahir45
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21 days
2025-05-27T22:56:19+00:00 2025-05-27T22:56:20+00:00Comment
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