The Bussmann NON125 is a 125 A, 250 VAC non-current-limiting one-time fuse in the Eaton Bussmann series (Class K5/H), designed for general‑purpose circuit protection with a 10 kA interrupting rating at 250 VAC. As a non-resettable fuse, it is intended for applications where a circuit must remain open after a fault, such as lighting circuits, main panel protection, and other low-inductive loads. The NON125 designation is listed as UL listed and CSA certified, and many datasheets note a 125 VDC rating in addition to the 250 VAC rating for this family. Catalog listings identify it as BUSS NON125, with verified distributor references from Cooper Electric, DigiKey, Platt Electric, and others.
