Symbol 5032 from IEC 60417 - Title/Meaning: Alternating current Function/description: To indicate on the rating plate that the equipment is suitable for alternating current only; to identify relevant terminals.
Additional information: 
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/313feeae-d4f8-42e3-94e5-4f88e3f3c03c 200.png
Vectorization:  Mrmw