The serial number is known to Eaton to be SUSPECT.
Eaton Bussmann series medium auxiliary fuse, VT fuse-link, medium voltage, 2 A, AC 12 kV, 220 x 41.3 mm, back-up, BS, IEC, Protection of auxiliary transformers, 2 A, 40K A Breaking Cap, Inst Air, Back-up, IEC, AC, Class back-up, Bolt-on