Relay coil?

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=70060
Printed Date: July 04, 2025 at 6:26 AM

Topic: Relay coil?

Posted By: Powermyster
Subject: Relay coil?
Date Posted: January 04, 2006 at 5:56 PM

any you guys know off hand exactly whats current an spdt relay uses for the coil.

was gonna hook up a n/c circuit immobilser but wanna work out the current draw

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Why oh Why didn't i take the blue pill
Darren Power

Replies:

Posted By: Ween
Date Posted: January 04, 2006 at 8:47 PM

hi,

from a bosch relay website...12 volt spdt relay...140~160 mA.

mark

Posted By: genehewett
Date Posted: February 07, 2006 at 5:07 AM

I think its more like 30mA. Lots of relay info here.

Posted By: Ween
Date Posted: February 07, 2006 at 8:11 AM

hello again,

the current value would obviously vary depending upon the relay used. i assumed...(forget that).

from the above site mentioned "The current draw by the coil of a bosch relay is ~0.160 amps (~75 ohm coil)."

mark

Posted By: hotwaterwizard
Date Posted: February 08, 2006 at 12:39 AM

less than 1/2 an amp.

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

Posted By: bravesirrobbin
Date Posted: February 12, 2006 at 3:26 PM

Measure the coil resistance with a multimeter, then 12 divided by that measurement will be the current.

Posted By: auex
Date Posted: February 12, 2006 at 8:08 PM

I have been told 133mA.

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

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