Yes but your switch could be padres mounted or on a wall box set into the
wall, and at the moment the screw spacing is the same for both so the switch
comes separately. If you look around new builds you see the boxes in the
walls with no sockets fitted yet and just wires poking out, then along comes
the guy with the switches, hoping nobody made the circuit live yet. grin.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

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Note this Signature is meaningless.!
"S Viemeister" wrote in message
...
On 4/15/2019 8:26 AM, Jeff Layman wrote:

Basically, why are the components fitted to the removable front plate?
Why aren't they fixed to the back of the box (whether that is fitted on
or in the wall)? It seems to me that as the wiring - and that could be
mains cable or coax - enters through the back of side of the box, it
could be connected directly to a switch, socket, or whatever which would
itself be screwed to the back of the box. The front cover would just
have holes in it to accept the 3-pin socket, coax socket, switch, fuse,
etc, and that would be fixed to the box in the usual manner.

That's how it's done in North America - certainly makes decor changes
easier...