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Relay Contact Question
Relay Contact Question
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Old 2nd April 2005, 10:49 PM   #1
lgreen is offline lgreen  United States
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Join Date: May 2003
Location: San Diego, USA
Default Relay Contact Question

I've gotten this 12 VDC relay for my soft start circuit. As I said, the relay is actuated by 12VDC. However, I can't figure out which actuation terminal (A or B) is +12VDC and which is ground??? Does it matter? I did a quick experiement and it works both ways. Before I randomly pick one orientation I wanted to check with you all to see whether this was normal so that I don't damage the relay inadvertently.
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Old 2nd April 2005, 11:09 PM   #2
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
you can feed dc in either direction.
This relay is taking current all the time the circuit (amp) is on and will run hot.
Try searching for a volt reduction circuit that increases pull-in current and then runs at reduced voltage, about 50% to 70% of rated voltage.
regards Andrew T.
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