So I have a question about a problem I am trying to solve. Currently, an eight contact push button is being used to stop machines in case of a fire or other catastrophe, however there are not enough contacts for all the machines that need to be turned off in such a situation. I need to know if there are methods that I can research that would be able to allow for more machines to be connected to a maintenance stop without the use of relays. All the devices that will be turned off by this push button involve three wire start stop circuits.
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