Hello again Alan
Yes and no -- it is NOT "catenary" wire as such, but rather the simpler "trolley wire" designed for streetcars with trolley poles with grooved wheels or grooved slider shoes to ride on the sides and undersides of the wire.
Catenary wire is strung (hung) quite differently and does not require "wire frogs" as used in "trolley wire" to divert the trolley pole to the right or left diverging trolley wire at switches, where two trolley routes divert.
That's why railroad trains running under catenary wire use PANTOGRAPHS with a very wide sprung flat contact-plate shoes for running under, against solely the bottom of, the catenary current feed wire where two catenary wires divert over switch tracks.
The ends of Pantograph "contact pans or sleds" would invariably foul and snag the span pull-off and hanger wires of the trolley wire system !
The photo attached shows the trolley wire going under my O Scale NYC EL Line and into Protector Channels to prevent the trolley pole, if and when it de-wires, from hitting the EL structure steelwork.
Regards - Joe F