132075R4 is an S&C Electric Company SM-5 power fuse refill unit designed to fit SM-5 fuse holders. It carries a 50E ampere rating and supports a nominal 14.4 kV with a maximum of 17.0 kV, making it suitable for use in 14.4 kV class switchgear. As a standard-speed refill, it is used to restore service after the main fuse operates in an SM-5 assembly, helping maintain proper coordination in medium‑voltage distribution systems.
