Line over a wave (both AC and DC)
The equipment is suitable for both direct and alternating current (universal). Next to a terminal, that terminal can take either.
Symbol reference: IEC 60417-5033
A mark tells you what the maker declares, never that the product is safe.
- What it looks like
- A straight line with a sine wave underneath it.
- Who may apply it
- The equipment maker, on the rating plate or terminals.
- Where it goes
- On rating plates and terminals.
What it does not promise
It does not mean any voltage is acceptable. The rated voltage range printed next to it still applies to both AC and DC.
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 5033 (title, function, publication) — Symbol 5033 from IEC 60417, “Both direct and alternating current”: to indicate on the rating plate that the equipment is suitable for both direct and alternating current (universal); to identify relevant terminals. Checked 2026-09-24.
Written in our own words; quotations are the sources’ wording.