Bussmann RES100 Fuse

RES-100 from Bussmann (Eaton) is a 100 A, 600 V renewable Class H fuse with Super‑Lag time‑delay characteristics designed for non‑current‑limiting protection in industrial power distributions. As a renewable fuse, the fusible element is replaceable, allowing reuse in panels, disconnects, and switchgear after a fault or maintenance, which is particularly useful in circuits with motor start‑ups or short surges. This fuse form is part of Bussmann’s Class H family, known for ferrule‑end, non‑indicating fuses suitable for 600 V systems and standard Class H fuse blocks. The RES‑100 is specified for 100 A at 600 V, aligning with applications in feeders, motor circuits, transformers, and other equipment protection in commercial and industrial environments. Distributor listings also indicate that RES‑100 is obsolete and no longer manufactured, so engineers seeking current availability should consider contemporary renewables within the Bussmann Class H line that match the same voltage and current rating.