You could look at ESP8266 relay boards. There are many options out there with multiple relay banks. Most I’ve seen are SPDT relays but depending on your supply/loads you may be able to find a creative solution. Some even come with fully integrated power supplies. Each GPIO of the ESP8266 can be assigned to its own HTTP switch in Vera. While not a Zwave solution it can be controlled in Vera if that’s what you’re shooting for.
Do a search on ‘BroadLink MP1’ . It’s a 4 way power strip but you could plug mains powered relays into the sockets to get dry contacts? I’m looking for anyone brave enough to be a beta tester for the Broadlink plugin. Each relay would show up as a separate device :
You could also look at the robot electronics PCBs. I was working on a plugin for them (but with no hardware to test on) so I have no idea if it ever worked out. Without feedback and logs it’s impossible to proceed.