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Discuss smoke alarm to cut out circuit in the Security Alarms, Door Entry and CCTV (Public) area at ElectriciansForums.net
so - live into relay (C) - n/c from relay to (A1) of contactor - neutral on (A2) of contactor
so when the smoke alarm is in normal (not alarming) the relay will hold the contactor closed so that the load will be operating through the contactor & when the smoke alarm activates the relay will operate the contactor & cut off the circuit???????????
Have you designed this to stay off until it is reset by a deliberate action, or will it switch on again when the smoke alarm deactivates.
It would be a bit daft if when the smoke clears the contactor drops back in again and the machine starts smoking again!
Reply to smoke alarm to cut out circuit in the Security Alarms, Door Entry and CCTV (Public) area at ElectriciansForums.net