RELAY LIBRARY SYMBOL STANDARD

Deion Adel
Nov 18, 2021

I don’t often use relays in my projects but I was investigating a simple circuit that required a relay. At this point, any DPDT relay would do.

My surprise and questions are:
It seems all the relays in the standard library are drawn in what appears to be the “energized coil” position. I had always drawn relays in the unenergized position where the moveable relay element was furthest away from the coil.
I also see the “contact” point on the stationary contacts have a filled or not filled configuration. From a standards view, I’m not aware of the meaning of such a graphic. I refer to some relay symbols, but I am not sure if it is reliable? Is there some recent standard for drawing a relay in such a manner?

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