PDXTrains,
I am one of those people who thinks there is no desirable model of a CW-80. This is not a slam on Lionel, they make lots of other great transformers. As Marty indicated the modern ZW-L is one great one the old ZW and KW are great also. Use the 10 Amp Breakers with them. If you must use the CW-80 use it for a bumper Car line or a street Car line, the old KW is still better for that also. Never leave a CW-80 Transformer plugged in and unattended however.
You can purchase the good 10 Amp Resettable Breaker Banks from Train Electrics LLC call them at (231) 631-0447, easy to use and very reliable, delivered right to your front door.
PCRR/Dave
Resettable 10 Amp Resettable Breaker Panel just to the right of the DCS Hand Held Remote Controls, in the picture below. I have 4 sets of these reliable Breaker Banks and I use them between all my Transformers, modern one's included and TIU's, on the Red Line powering the mid Tracks on my layouts, thru out the Train room.