40a Contactor with 110v Coil. Use in line with a SSR relay on one of the poles and have added safety in your high voltage circuits. By installing a contactor with a switch on 110v, you can turn your heating element (220v) circuit on and off physically. To control the power to the element that in turn control your temperature, add a Solid State relay in line on one of the poles, before the contactor.
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