Double push switch?

[Sam Gangee]

I need a faceplate that holds two push-release switches. The sort of thing you'd see on a stairwell for timed lighting.

One switch must be Normally Open - momentary ON.
The other must be the exact opposite: Normally Closed - momentary OFF.

Does such a thing exist?

 

[ricicle]

Yes if you use grid switch components.

 

[Sam Gangee]

Many thanks. With a slight redesign, I think I can use two Normally Open switches. However, I can't find a mail-order supplier.

 

[flameport]

Switch here: http://www.screwfix.com/p/crabtree-10a-retractive-switch/76949
which can be wired either way.

Other parts here: http://www.screwfix.com/c/electrical-lighting/crabtree-grid-wiring/cat830650

 

[Sam Gangee]

Thank you so much! That's really helpful. I assume the included "grid" is something to hold the switches to the plate?

What is the "spare key - pack of 2". Do I need that?

The plate looks very "industrial". Is there a white plastic one available?

 

[flameport]

White plastic plate and grid: http://www.screwfix.com/p/crabtree-2g-plate-grid/64294

The grid is a metal frame which the switches fit into, the cover plate goes over the top. The Crabtree one above is the plate & grid as one item, for other makes the two items can be purchased separately.
It will fit onto a backbox like this: http://www.screwfix.com/p/crabtree-1-2-gang-box/58836 or a standard flush mounted metal box such as this: http://www.screwfix.com/p/appleby-galvanised-steel-knockout-box-1g-35mm/52143
It is usually possible to use a white plastic surface box, however this may require some modification or adjustment of the metal grid.

The MK equivalent items are:
Switches: http://www.screwfix.com/p/mk-10a-2-way-push-switch-press-text/59922
Frame: http://www.screwfix.com/p/2-module-grid-frame/81450
Cover: http://www.screwfix.com/p/2g-module-white-front-plate/84716
Box: http://www.screwfix.com/p/1-2-module-metalclad-box/37530

The keys are used with switches like these: http://www.screwfix.com/p/20a-sp-2-way-secret-key-em-lighting/26165
you don't need them.

 

[Sam Gangee]

Thank you so much for that detailed description!

Today I bought, locally, a double switch intended for up-down operation of a window shutter motor. It will do for my prototype, but I'll have to modify my control circuit because the switches have a common connection.

Thanks again.

Sam