At this job I am trimming the whips for the jamb switches were ran to the top of the door. Now I am finding out they only make a low voltage jamb switch for the top. So to get these to work I now need to install a transformer and a contactor right? Does anyone know of a relay that acts as both?(trans and contactor)
Jesus may have been a capenter,but God was an electrician.Genesis1:3
I'm not sure exactly what you need for your application, but Amprobe used to make a low-voltage relay and jamb switch combo. I used to use alot of them for closet doors in residential bedrooms. I will try and find the part number.
Here is the Amprobe relay part number. You can use those low-voltage roller type jamb switches with it if you have 120V at the fixture you want to switch. Not cheap as I remember though, around $30.00 each. You can download instruction manual at Amprobes website. Hope it's what you need.
About 30 years ago I picked up a Tab book with dozens of home projects, many based around a type of relay which I'd never seen over here at the time, nor anywhere since.
It was basically a relay which incorporated transformer action to provide a low-voltage switching line. The primary winding is fed directly with a constant 120V supply, and the secondary winding forms the control circuit, so when you short the secondary it increases the magnetic field enough to close the contacts.