KSI series single-phase solid state relay, internal use of reverse parallel thyristor structure, widely used in various industrial occasions, suitable for resistive, inductive and capacitive loads. Input control voltages are 4-32VDC and 90-280VAC. The load voltage is 240VAC, 380VAC, 480VAC and 660VAC, and the output current is 10A, 25A, 40A, 60A, 80A, 100A and 125A.