FYI, the Phoenix connectors on the back of the RFX9600 will pull out. That is, they consist of a socket and a plug. You connect wires to the plug and then reseat the plug into the socket. They are kinda tough to get apart and you think you'll break 'em but you won't. Xantech equipment uses the same type of locking connectors.

If you are looking for parts, I found this site which hosts Xantech connectors. Here's a link where you might find a Weco part #.

[Link: connex-electronics.com]{weco{weco