Lincoln Service Parts 1 › Lincoln Electric 9SM20193 RESIDUAL CURRENT DEVICE M20193 Lincoln Electric 9SM20193 RESIDUAL CURRENT DEVICE M20193 Sale Price: $896.05 Original Price: $1,030.46 RESIDUAL CURRENT DEVICE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! RESIDUAL CURRENT DEVICE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1