Update
After doing a fair bit of leg work I inquired with my boss about the possibility of upgrading these old C/H starters with new combination starters. They gave the green light and right now I am looking at a quote for two Eaton combination starters with electronic overloads. I do not have experience with electronic overloads so I've been researching the subject. It appears to me that there are several advantages over bimetallic overload relays. Beyond these advantages I started looking into the additional communication module that was not a part of the original quote. I like this option but I wonder how far to take this upgrade. The existing starters that I would like to replace are all for 600V building supply/exhaust fan motors. Obviously these are critical to the function of the building and fire safety. So if you have the option to exit the dark ages of monitoring and control and can now enter the modern era why would you not proceed that direction? Basically what I am asking is can anyone give some of their own thoughts on the pitfalls of going high tech for this application?
