24V Relay

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=57619
Printed Date: May 09, 2025 at 8:25 AM

Topic: 24V Relay

Posted By: dragginaccord
Subject: 24V Relay
Date Posted: June 13, 2005 at 3:01 PM

Can i do this with your normal SPDT bosch style relay?

85 - (-)alarm trigger
86 - 12v constant
30 - 24v from hydraulic system
87 - 24v to hydraulic solenoids to activate pump.

any help is much appreciated......i figured the 12v and the (-) would work as a team and the 24v would pass right through without damaging the relay but i could be wrong.

Replies:

Posted By: Montrealler
Date Posted: June 13, 2005 at 3:50 PM

Yes you can do this but you must respect the proper Amp ratings. Most of the time 30 amps is the maximum allowed

Posted By: ff-mike
Date Posted: June 13, 2005 at 4:17 PM

and generally that 30A rating is at 12vdc, and may change to a lower amount at a higher voltage

Posted By: dragginaccord
Date Posted: June 13, 2005 at 4:29 PM

Thanks for the help......the 24v output will only be activating a larger solenoid so the amp draw will be very little.

Posted By: hotwaterwizard
Date Posted: July 01, 2005 at 12:57 AM

They do make the same style relay that are 24v.

https://www.mouser.com/index.cfm?&handler=data.listcategory&D=*automotive*%2b*relay*%2b*24v*&terms=automotive+relay+24v&Ntt=*automotive*%2b*relay*%2b*24v*&Dk=1&Ns=SField&N=0&crc=false

https://relays.tycoelectronics.com/datasheets/134-VF4.pdf

-------------
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

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