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Fuse VS Circuit Breaker Any Standers?

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scorpionss22

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Is there is any standers to guide me in control panel design to know which is best solution for protection?

My goal is to build control panel with 220||24 Vac transformer what is the stander :
1- In mean incoming 220 Vac which is better to use Circuit breaker or fuse or both?
2- Transformer output 24 Vac: which is better fuse or breaker or both? any stander?

Thanks for your cooperation
 

If the application is cost sensitive use fuses. If the application needs close current over protection use circuit breakers. Circuit breakers tend to be more reliable then fuses (fuse wire runs hot all the time and eventually fatigues giving false breakages).
Frank
 

Additionally talking in general, Fuses have Lag time as compared to circuit breakers.
 

Any stander or reference? in control panel design as a guidance?
 

many times, the term cost sensitivity is misnomer, as the damages are caused to semiconductor materials ,in a design, much faster than the time delay of either thermal fuse, or circuit breaker. Even some of the circuit breakers are also depending on thermal devices.

Perhaps we need to trip power much faster than possible damage to the components involved in design.
. Thus trip based on measured current might, IMHO, would be safer. However, the design should be resettable but not demanding fuse or other material replacement.
 

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