Symbol 5010 from IEC 60417 - Title/Meaning: ""ON""/""OFF"" (push-push) Function/description: To indicate connection to or disconnection from the mains, at least for mains switches or their positions, and all those cases where safety is involved.[]Each position, ""ON"" or ""OFF"", is a stable position.
Additional information: 
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/3bd5b200-cd1d-4778-ba7c-a73545b984c8 200.png
Vectorization:  Mrmw