Cromwell
Well-Known Member
I have a PID controller that accepts 110 input, and will power an SSR. I haven't bought the SSR yet, but I did buy a couple of contactors. Looking at Kal's build, there isn't a contactor in it, but I see sometimes people use them in series with the SSR. Why? Won't an SSR drive a 5500W element directly? Does the contactor lessen the current through the SSR and somehow make it last longer? A contactor is mechanical, correct? Will it have a problem with fast switching?