We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A vertical bar (|) — IEC 60417-5007, marking the control position that places equipment into a fully powered state.
Also known as: Power on symbol, IEC 60417-5007, Line symbol on a switch
The vertical bar of the classic |/O switch pair. IEC 60417-5007 indicates that the control places the equipment into a fully powered state; the shape derives from the binary digit 1.
Indicates that the control places the equipment into a fully powered state. Conventionally paired with the circle (power off) on a rocker or toggle switch, echoing binary 1 and 0.
Contexts: Electrical equipment
The IEC 60417 symbol set appeared in the 1973 edition of the standard (then IEC 417), with the symbols in informal use before that.
1973 onwards
A single upright vertical bar, like the digit one, with nothing enclosing it.
Both belong to the IEC 60417 equipment markings system.
The two halves of the conventional |/O switch marking: the bar means on, the circle means off.