Re: the pictures;
Thanks Bill, for posting them.
The "type B single poles" look familiar enough. Along the lines of a DIN rail mounted CB in industrial machine control panels over here. The other two reminds me of x-10 modules. (They are powerline controllers that use a frequency signal for a switching signal, so that you can turn on or off a device from a remote location, as long as the device is on the same power system.)
In the picture, are those mounting screws in the corners, or adjustable trim pots in the lower pics?
