That was the standard for many years until Switch operators appeared with two normally open contact blocks mounted side by side. The contact block, when mounted to a push button had one set of normally open and one set of normally closed contacts and that is how either a hand/auto switch or a hand/off/auto switch would be drawn. Well for many years in the NEMA world we use an operator with a single cam operating a double contact block. Kcress - RE: How to draw a 2-position selector switch and its contacts? (IEC world) JuanBC (Electrical) I CADded three other symbols that all failed their byzantine machinations by various details which this did not. But, I only spent about two hours puzzling this mess out.

You can't continue that symbolism without mirroring the contact. Why 'completely shocking'? Note they (freakishly) show the dashed side of their Vs as being the ON position and that mechanically associates with physically shoving the dashed-to-contact in that direction to physically operate it. I actually think they've dropped them for saner pastures. Texas Instruments has lost many of our component selections due to the vapid IEC symbols they use. IEC symbolism is so bad that I and several other engineers I know will simply exclude any and all integrated circuit offerings for our designs if they're provided in IEC. I can well understand a lot of people being shocked, electrocuted too, with these lame symbols.

Autocad electrical switch symbol