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Will a 12v component work in a 24v environment?

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nuckolls.bob(at)aeroelect
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Posted: Sat Mar 28, 2015 11:29 am Post subject: Will a 12v component work in a 24v environment?

At 08:04 2015-03-28, you wrote:

 	  Quote: 	
		  



The recent thread on relays got me wondering about something:



Is there something about a 12v relay or switch (basically mechanical 

components) that precludes it's use in a 24v system of the same or 

less current loads?



Or put another way, a wire suited for 8 amps at 12v will be okay 

with 8 amps at 24v.  So it would that logic also apply to a switch or relay?


	


   There are TWO ratings that describe

   a relay's function. CONTACTS and COIL.



   Generally speaking ANY switch or relay

   with published CURRENT ratings for 120VAC will

   have ratings in the same ballpark at

   14VDC.



   The coil is another matter. As others have

   pointed out, operating a relay at 2x its

   rated coil voltage will QUADRUPLE the power

   it dissipates . . . guaranteed destruction.





   Bob . . .

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