Can I use 6v DC relay as a switch in the circuit that passes 240volts. relay 6v 240 ac vol ------/ ----------| |------------------------- | ---------------O (bulb) | | -----------------------------
Yes, so long as the contacts are rated for 240V at the peak current of the bulb (typically 10 times the running current) So, for a 100 Watt bulb a relay with 5A 250VAC contacts would be a good choice. Bye. Jasen