The clearance distance for that voltage is 4 mm, 0.158" IIRC. If all of the switch's internal conducting components for each circuit meet or exceed this distance. it might pass.

But if the 12 V is fully isolated from the mains, other rules might kick in, such as reinforced insulation.

ak

 

OK...looks like that's not an option. Thanks.

 

If you could get away with on and off buttons, or a 3 position, center off, momentary in each direction DPDT switch, then it could be simple. Or at least, fairly simple. One side duplicates the computer button in both directions, the other side latches a power relay in one direction and operates a single pole NC relay to unlatch it in the opposite direction. And both of those relays could have 12 volt coils. And the circuit would be simple enough that any electrician could service it if the TS is not available in the future. That is important for applications that are serviced by volunteers mostly.
This scheme will pass code because of low voltage on both sides.

 

I might be able to get that to work. Thanks for your ideas!

 

I have learned that even whan a design is well documented and built very well, that there are a lot of people who have not a shred of understanding about how it works. And unfortunately those are the ones who will be messing with it if ever anything comes loose or fails.

And the damage done by well meaning but unknowing individuals can be hard to even imagine. The fact that they do not know, and are aware that they do not know, does not stop them nor even slow them down very much. And then the excuse "But I didn't know" is so very lame, because it shows that they never stop to consider at all.

(This remark is not about any who participate in these forums. It is about some of those who I have to contend with.)