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240VAC SSR in a 120VAC application?

240VAC SSR in a 120VAC application?

240VAC SSR in a 120VAC application?

(OP)
Up front; I know enough to be dangerous, which is why I'm here.

I have a temp contoller that I'd like to use with a SSR to control the power to a heating element.  This project is on the budget plan, so I was looking at e-bay for most of my components.  Most of the relays I've seen there are rated for 240VAC at some X number of amps.  Is there any reason why a relay would not work with a 110VAC load (heater)?

RE: 240VAC SSR in a 120VAC application?

Most SSRs will work. But some of the heftier ones have auxiliary circuitry that may or may not be satisfied with the 110 V. They are then usually marked with a voltage range. Like 160 - 250 V AC or similar.

I see no reason why you shouldn't try. You cannot set anything on fire if you keep gaugues up and temperatures down (heat-sink!).

Gunnar Englund
www.gke.org

RE: 240VAC SSR in a 120VAC application?

I agree with skogsgurra it won't normally be any problem.

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