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Dual current ratings on Relays? (e.g. 30/40A)

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=4121
Printed Date: October 31, 2024 at 6:51 PM


Topic: Dual current ratings on Relays? (e.g. 30/40A)

Posted By: omega
Subject: Dual current ratings on Relays? (e.g. 30/40A)
Date Posted: October 02, 2002 at 11:51 AM

What do the dual ratings on  relays mean?  Ive seen relays that simply say 30A or 40A and then other ones that say 30/40A or 20/40A.

Why are there two ratings?  (They are all 12V SPDT relays I'm talking about.)  Does one rating indicate the current capacity when the relays coil is not energised and the other when it is energised?  If that is the case, which one is which?  Why would they be different anyhow?

If anyone knows, please let me know!




Replies:

Posted By: djfearny2
Date Posted: October 02, 2002 at 1:28 PM

what i think it means is it is recommended for thirty but can be used up to 40.

i dont think you'll have any porblem using them in you car so go for it. that is what your looking for.



-------------
Jon
Installer/Help Technician
---coral springs florida---
mecp certification is not always needed. I have it and it has not helped me out at all. my experience out shines it.





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