Discuss HELP with electric roller shutters in a shop in the Electricians' Talk | All Countries area at ElectriciansForums.net
Not if the problem with 1 motor was throwing the mcb. Then no motors will workthe way i understood it was the customer wanted all 3 shutters working off one switch, meaning all three opening at the same time, surely if there was a problem with one motor the other two would still work?
I may be simplifying things a little here but from what I read the OP want to isolate the roller shutters from an isolator. The shutters are on one circuit single phase. Surely just add up total load of motors and stick a DP isolator in the supply rated to cover all the load?????? Seems to be complicated for no reason.
That seems to be what the op is trying to achive, the only reson i suggested a contactor was that if this was employed then the isolator switch could be put anywhere.
Reply to HELP with electric roller shutters in a shop in the Electricians' Talk | All Countries area at ElectriciansForums.net
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