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Did use RBCO's on three phase they were an add-on kit and three units wide so we could just get 6 socket outlets on a 32 way board.
But as said before one has to be careful that an E-stop does not do reverse to intended and cause danger by allowing machines to run on. Same applies to any trip be it MCB or RCD eddy current breaking and ward leonard can produce problems and before any safety items are fitted a careful inspection is required.
Many years ago we had a workshop with all E-stops killing supply to all machines and some were placed to be knee operated and it was easy to trip in error. Losing drive to lath can break tool points and saws with lub pumps can jam solid. In our case normally only one guy working in the machine shop so not too much of a problem but with loads of people working in a machine shop I would be very wary.
But as said before one has to be careful that an E-stop does not do reverse to intended and cause danger by allowing machines to run on. Same applies to any trip be it MCB or RCD eddy current breaking and ward leonard can produce problems and before any safety items are fitted a careful inspection is required.
Many years ago we had a workshop with all E-stops killing supply to all machines and some were placed to be knee operated and it was easy to trip in error. Losing drive to lath can break tool points and saws with lub pumps can jam solid. In our case normally only one guy working in the machine shop so not too much of a problem but with loads of people working in a machine shop I would be very wary.