Lightning arrow (dangerous voltage)
Warns of hazards from dangerous voltages at the marked place. Treat what it marks as live and leave covers closed.
Symbol reference: IEC 60417-5036
A mark tells you what the maker declares, never that the product is safe.
- What it looks like
- A zigzag lightning arrow pointing down. On a warning sign it stands inside a triangle, following the ISO 3864 rules for safety signs.
- Who may apply it
- The equipment maker, where dangerous voltages create a hazard. Used on a warning sign, it follows the ISO 3864 rules for safety signs.
What it does not promise
The symbol does not state the voltage. The reverse does not hold either: a part without it is not thereby safe to touch.
Other marks with the same shapes
Sources
Each page below was fetched and read on the date shown. Where a symbol’s IEC 60417 or ISO 7000 number is given, a public page listing that number is among them.
- Wikimedia Commons: File page transcribing IEC 60417 entry 5036 (title, function, notes) — Symbol 5036 from IEC 60417, “Dangerous voltage”: to indicate hazards arising from dangerous voltages; in a warning sign the rules according to ISO 3864 shall be adhered to. Checked 2026-09-24.
Written in our own words; quotations are the sources’ wording.