Symbol 6204 from IEC 60417 - Title/Meaning: Caution, static magnetic field hazard Function/description: To identify areas with potentially hazardous static magnetic fields and forces in an installation.
Additional information: 
There are two different kinds of hazard: exposure of the human body to very strong fields, and mechanical forces on metal objects, in particular if ferro- or ferrimagnetic.
For technical details, see IEC 60519-1.
In case of application in a warning sign the rules according to ISO 3864 apply.
See also symbols 6205 and 6206.
Own work using: iso.org/obp/graphics/grs/7044609d-afa5-48b6-aea1-2fcba6f2309e 200.png
Vectorization:  Mrmw