"Arfa Daily" wrote in message ...
"William Sommerwerck" wrote in message
...

ON-OFF-ON means the switch has three positions. In the
center position, none of the contacts is closed.
An ON-(none)-ON switch is a regular DPDT switch. It has
no central third position.
Does this make sense?

Rather less than the 'proper' designation of SPDT or DPDT that
most engineers know and understand ... :-(

Somebody must have decided that all toggle switches should have a designation
for the "center" position -- even if it doesn't physically exist!