55GFMSJD400E is a high‑voltage DIN/E fuse rated 5.5 kV and 400 A, designed for use with Square D HVL switchgear in 5.5 kV MV distribution. It is a single‑barrel device housed in a 442 mm (17.4 in) long by 51 mm (2.0 in) diameter body, with a symmetrical interrupting rating of 65 kA. This Eaton Bussmann (Cooper Bussmann) fuse is cataloged for Square D equipment and is commonly used to protect MV feeders in HVL/HVLCC switchgear configurations.
