Ferraz Shawmut A070UD33TTI1250 Protistor fuse is a 700 V, 1,250 A square-body Protistor device designed to protect high-power semiconductors in power electronics. It carries an interrupt rating of 200 kA at 700 V, enabling rapid opening under fault conditions in rectifier modules and motor-drive circuits. The model sits in the 690–700 V Protistor family and is catalogued as A070UD33TTI1250 by distributors and suppliers, reflecting its place in the Ferraz Shawmut/Mersen Protistor lineup. This fuse provides fast, high-current protection for diodes, thyristors, and IGBTs in large-scale power conversion gear where reliable operation near 700 V is essential.
