S&C Electric 133040R4 - Medium Voltage Fuse Refill 25kV (SM-5 Class)

S&C Electric 133040R4 is a medium-voltage fuse refill designed for high-voltage circuit protection in industrial power systems. This SM-5 class fuse operates at 25,000V AC with standard interrupting characteristics, featuring a durable construction with precision-engineered fusible elements for reliable fault clearing. The 3 lb refill cartridge maintains compatibility with existing SM-5 fuse holders while meeting stringent industry standards for medium-voltage protection. Its standardized velocity characteristics ensure predictable arc quenching performance in utility and industrial applications including substations, switchgear, and motor control centers.

Key Features & Specifications

• Type: SM-5 class medium-voltage fuse refill with precision fusible element
• Voltage Rating: 25,000V AC
• Class Rating: SM-5
• Velocity: Standard interrupting characteristics
• Weight: 3 lb
• Standards: IEEE C37.40-2003, C37.41-2008
• Applications: Substations, industrial switchgear, motor protection
• Section: Fuse Refills
• Family: SM-5
• Configuration: Single barrel design