Cantek 1440, Birmingham, Wilton CT 1440, and others Rebuild

[turbo711]

Thanks Dallen and Edk. I am not familiar with this industrial wiring stuff. How do you guys know that they are the right ones? What is the difference between a CN or a CU prefix. I get the NO or NC aux relay thing, and the coil voltage, but what about the main contact arrangement? Can they be normally open or closed? If I get the exact replacement, then I can just wire it in, but if it is different, then I will have to figure out the complete circuit, and that would be a big pain.

Mark