Lincoln Service Parts 2 › Lincoln Electric 9SS33578-1-17 MAIN SWITCH S33578-1-17 Lincoln Electric 9SS33578-1-17 MAIN SWITCH S33578-1-17 Sale Price: $5.20 Original Price: $5.98 MAIN SWITCH PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! MAIN SWITCH PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1