S&C Electric Company 132150R4 Power Fuse Refill Unit

The S&C Electric Company 132150R4 Power Fuse Refill Unit is a coordinating speed refill assembly designed for use with SM-5 power fuse holders in high-voltage switchgear. It is rated for 14.4 kV nominal operation with a maximum of 17 kV, making it compatible with S&C’s 14.4 kV SM-5 class equipment. As part of S&C’s refill-unit offering, it serves to restore a blown fuse in the inline SM-5 configuration, enabling prompt operation and proper coordination with the associated interrupter/switch assembly. This refill unit is identified by the 132150R4 catalog code and is used in equipment designed around S&C’s Alduti-Rupter switches with power fuses for reliable protection in distribution networks. Typical applications include metal-clad and metal-enclosed switchgear where high-voltage fuses are used to protect transformers and feeders in utility substations and industrial power systems. The unit adheres to S&C’s standard refill interfaces for SM-5 holders, ensuring compatibility with existing refills and supporting coordinated protection schemes.