In article ,
says...

https://i.postimg.cc/3NGhZHkk/Disconnect.jpg

The switch looks just like the one in this picture (Topaz brand) and yes,
the switch was upside down like in this picture. I pull the switch out and
thankfully the unit stops running. Thinking it was installed incorrectly I
plugged it back in with the label reading correctly (Off/On), no power. I pulled out the switch again and plugged it in with it reading On/Off in the upside down position like in the picture, now the unit has power again.
Once again I pulled it out and plugged it in again as Off/On and of there is
no power to the unit when plugged in like this.

My question is do these disconnect plugs go bad or perhaps it's the whole
box that is on the blink?




It looks like it is working correctly to me. When the word ON is
upright there is power out of the box. When you pull it out and turn it
so the OFF is upright, you will not have any power comming out of the
box.

The one in the picture is not upside down. The ON is upright and OFF is
upside down indicating power will come out of the box.