relay

[humbleFunGuy]

I need a relay to switch 110AC using 24VDC. It should be normally
open. I get confused looking at all the specs. What kind of relay do
I need? Is SPDT the right type?

Any help and links to source is greatly appreciated. I am looking for
some place I can buy these in very small quantity.

Thanks,
Irfan
imohammed786@hotmail.com

 

[William P. N. Smith]

"humbleFunGuy" <imohammed786@hotmail.com> wrote:

I need a relay to switch 110AC using 24VDC. It should be normally
open. I get confused looking at all the specs. What kind of relay do
I need? Is SPDT the right type?

Sure, SPDT or SPST with a 24VDC coil and contacts rated at 110VAC at
whatever current you require.

Digikey.com has a good selection guide.

 

[m1ke dot m477hewz at gmai]

Digikey has an excelent online catalog that allows you to input the
needed specs and it spits the part numbers back at you. try here:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=324611&Site=US&Cat=32572356
for power relays. what you want is a coil voltage of 24vDC coil rating,
and a 15-25A contact rating. SPDT vs SPST depends on your aplication:
i.e. if you are switching the voltage from one device to another, use
SPDT if it's just an on/off switch you need, go with SPST.

Mike Matthews

 

[Peter Bennett]

On 25 Aug 2005 15:53:53 -0700, "m1ke dot m477hewz at gmail dot com"
<m1ke.m477hewz@gmail.com> wrote:

Digikey has an excelent online catalog that allows you to input the
needed specs and it spits the part numbers back at you. try here:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=324611&Site=US&Cat=32572356
for power relays. what you want is a coil voltage of 24vDC coil rating,
and a 15-25A contact rating. SPDT vs SPST depends on your aplication:
i.e. if you are switching the voltage from one device to another, use
SPDT if it's just an on/off switch you need, go with SPST.

However, SPDT relays are much more common than SPST, and can be used
for either normally open or normally closed contacts (or both.)



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Peter Bennett, VE7CEI
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