Cooper Bussmann 3544100M71M ELSP backup fuse is a high‑voltage protection device rated at 15.5 kV and 100 A. As a backup fuse, it provides interruption of faults in electrical circuits operating at elevated voltages, with the ELSP designation identifying this specific variant from Cooper Bussmann. The part number 3544100M71M denotes this exact fuse model within the ELSP family.
