Re: Relay ratings

From: Rylos (unknown)
Date: 09/14/04 

Date: Tue, 14 Sep 2004 19:08:34 -0400

Thanks Chris,

If the load I'm switching is lower than 24VDC, actually it's 5 can you push
more amperage through or is the 1A rating just 1A regardless?

-Dave

CFoley1064 <cfoley1064@aol.com> wrote in message
news:20040914162923.19417.00000554@mb-m22.aol.com...
> >Subject: Relay ratings
> >From: "Rylos" unknown
> >Date: 9/14/2004 10:29 AM Central Daylight Time
> >Message-id: <XdSdnbYEu-f5k9rcRVn-rg@buckeye-express.com>
> >
> >Hello All,
> >
> >I have a relay which has a rating of 1A at 24VDC. The current rating is
> >pretty obvious but is the voltage rating the maximum open circuit voltage
> >across it's terminals? Thanks.
> >
> >-Dave
> >
>
> The relay is rated to switch a 24VDC resistive load at 1 amp for the
> manufacturer-specified number of times before failure. That number can be
> anywhere between 20,000 and millions, depending on the spec ***. If you
use
> a higher DC voltage, you will get excessive arcing at contact open/close,
which
> will reduce life, pit the relay contacts and possibly cause them to spot
weld
> together on make. Usually it's rated that way because of contact
separation
> and contact separation speed.
>
> Good luck
> Chris
>

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