Comparing Fuses vs Circuit Breakers

June 23, 2022

Introduction

Flare Compare Team is here to help you illuminate the differences and similarities between fuses and circuit breakers. While both serve as protectors from electrical fires and ensure the safety of your electrical devices, they work in different ways. For those curious about which option is right for them, please read on.


Circuit Breakers

When a circuit breaker detects an over-current in a circuit, it trips and shuts off the flow of electricity. The breaker will remain in the tripped position until it is reset, thus restoring the flow of electricity to the circuit. Circuit breakers come in various sizes, making them adaptable to a wide range of electrical devices. Their adjustable trip settings also make them an ideal choice for protecting sensitive equipment.

Advantages

  • Resettable
  • Adjustable trip settings
  • Available in various sizes

Fuses

A fuse is a device that protects against short circuits and overloads in an electrical circuit by interrupting the flow of current. Compared to circuit breakers, fuses are a more basic form of protection. Once a fuse blows, it must be replaced before power can be restored to the circuit.

Advantages

  • Simple and inexpensive
  • Ideal for low-voltage applications

Comparing Fuses vs Circuit Breakers

Here are some key differences and similarities between Fuses and Circuit Breakers:

Fuses Circuit Breakers
Trip Time Fast Slow
Number of Trips Once Multiple
Availability Limited Widely available
Resettable No Yes
Cost Inexpensive Expensive

We can see that circuit breakers offer advantages like being resettable and adjustable trip settings, but are more expensive than fuses. Fuses, on the other hand, are less expensive and more suitable for low-voltage applications.


Conclusion

In conclusion, both fuses and circuit breakers serve the same purpose of protecting a circuit from damage due to overloads or short circuits. While fuses are less expensive but require replacement once blown, circuit breakers offer multiple trip times and adjustable settings but come at a higher cost. The option that works best for you will depend on your individual electrical needs.

We hope you found this comparison helpful. If you have any further questions or comments, please leave them below.


References

[1] M. R. Linford, "Electrical Circuit Breakers and Fuse Boxes: Everything You Need to Know," The Spruce, Jun. 14, 2021. https://www.thespruce.com/circuit-breakers-and-fuse-boxes-1152793

[2] "Fuses vs. Circuit Breakers for Commercial Buildings," FSG Electric, Aug. 22, 2017. https://fsg-qa.azurewebsites.net/blog/fuses-vs-circuit-breakers-commercial-buildings/


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