Symbol 5036 from IEC 60417 - Title/Meaning: Dangerous voltage Function/description: To indicate hazards arising from dangerous voltages.
Additional information: 
In case of application in a warning sign the rules according to ISO 3864 shall be adhered to
See also IEC 60417-6042
Published in: Supplement B, 1975
Own work using: iso.org/obp/graphics/grs/e3d2d8d6-eea6-407e-bd95-4ca051bfdf51 200.png
Vectorization:  Mrmw