I've come across Dapol and Viessmann systems for Catenary operation with pantographs (and maybe bow collectors?). There's another German system I forget the name of.
The Viessmann system is the only one I've looked at closely and while it looks as though it will do the business for a pantograph the trolley wire is not continuous so it won't work with a trolley poll. All the trolley pole type systems I've admired at exhibitions have looked as though they are home made.
Does anyone supply a ready made system for trolley pole wire? If it makes any significant difference I'm looking to run a Con Cor North Shore Electroliner but, to be honest, I've got such a mixture of bits to run on my railway it won't really matter to me if it's a system from anywhere in the world. Oh, and it has to be simple to set up! And last, if it could also be used to run pantograph equipped locomotives that would be brilliant (but I'm not expecting miracles).
I am NOT expecting to energise anything I may put up.