Square D 175GFMSJD40E Transformer Protection Fuse

Square D 175GFMSJD40E Transformer Protection Fuse is a Bussmann-made, DIN/E-rated, single-barrel current-limiting fuse designed for transformer protection in Square D HVL/cc switchgear. It carries a 17.5 kV nominal voltage rating and a 40 A (40E) current rating in a 1-barrel body. The part number identifies a 17.5 kV, E-rated fuse intended specifically for transformer protection on HVL/cc equipment, making it suitable for protecting transformer feeders by interrupting fault currents with fast-acting response. As part of the DIN/E family, this fuse integrates with HVL/cc configurations that require Square D transformer interfaces and fuse links. Typical applications include protection of high-voltage transformers in industrial power distribution systems, where reliable, E-rated protection at 17.5 kV is required. This 175GFMSJD40E fuse is used in settings employing Square D equipment and aligns with Eaton Bussmann’s high-voltage fuse offerings for transformer protection.