Symbol 3692 from ISO 7000 - Title/Meaning: Power take-off (PTO), stop 
Function/description: To identify the control that switches off or otherwise interrupts all power to the PTO. To indicate that the PTO is stopped and unable to restart until positive action is taken by the operator to enable PTO operation.
Own work using: iso.org/obp/graphics/grs/98e18608-2e9f-48e1-bb1a-125ce697a662 200.png
Vectorization:  Mrmw