Difference between switches and circuit breakers ?

Discussion in 'General Electronics Chat' started by Oussama Zaidi, May 30, 2016.

  1. Oussama Zaidi

    Thread Starter Member

    Mar 1, 2016
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    Hi
    I want to know what is the difference between switches and circuit breakers in a PCB circuit, in my research I found that breakers have a rating voltage and a rating current but switches have only rating voltages, does that mean that a switcher can work with any value of current ?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Circuit breakers open circuit at a certain rated current and may or may not be re-settable.
    By switch do you mean just a means of physical contact open/closing, as this is normally all they are.
    Max.
     
  3. cmartinez

    AAC Fanatic!

    Jan 17, 2007
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    wouldn't that be called a fuse? :confused:
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    I guess technically, although a fuse is a 'Re-settable by replacement' ' Circuit Breaker' when were talking a comparison to switches, semantics I guess.;)
    Max.
     
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  5. Oussama Zaidi

    Thread Starter Member

    Mar 1, 2016
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    Can I use this switcher with 5A of current ? http://www.mouser.com/ds/2/307/B3F_0811-26083.pdf
     
  6. cmartinez

    AAC Fanatic!

    Jan 17, 2007
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    Look at page 224 (4 of 13 in the document) it says that those switches have a maximum capability of 0.050 A (50 mA). So no, you can't use them like that. You'd have to use a transistor or relay (depending on your application) to make that push button activate a 5A load.
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
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    As per @cmartinez, also it mentions Resistive Load rated, what is the nature of your load you require to switch?
    Max.
     
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