Symbol 6207 from IEC 60417 - Title/Meaning: Caution, touch current that can cause burns Function/description: To identify accessible conductors and touch currents which can cause burns or internal bodytissue overheating of moderate risk.
Additional information: 
Typical conditions are with frequencies above about 100 kHz.
For technical details, see IEC 60519-1.
In case of application in a warning sign the rules according to ISO 3864 apply.
See also symbol 6208.
Own work using: iso.org/obp/graphics/grs/9188a16e-0e38-4273-b2db-b1dde883cbce 200.png
Vectorization:  Mrmw