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Miller® SPD Term Double Pole Single Throw Toggle Switch is designed to use with HDC 1500DX submerged arc controller for automatic welding, Big Blue® 400 Pro series CAT, Kubota, Mitsubishi engines, Big Blue® 350 And 350X PipePro series CAT, CAT CE, Mitsubishi, Bobcat™ 250 diesel, Big Blue® 700 Duo Pro®, Big Blue® 700X Duo Pro® engine driven welding generator, Big Blue® 500 PRO, Big Blue® 800 DUO PRO, Big Blue® 800 Duo Air Pak® engine driven welding generator and air compressor. It requires a voltage rating of 250 V and current rating of 20 A.