S&C Electric 343150R3 - SM-4 Medium Voltage Fuse 23kV 100A (Class E Slow-Blow)

S&C Electric 343150R3 is a medium voltage SM-4 fuse designed for high-voltage circuit protection in industrial power systems. Rated for 23,000V AC with a 100A current capacity, this Class E fuse features a very slow blow characteristic for reliable overcurrent protection. The 2 lb unit employs robust construction with precision-engineered fusible elements housed in a durable ceramic body, meeting IEEE C37.40 standards for medium-voltage fuses. Its design ensures compliance with utility-grade protection requirements, making it suitable for substations, transformers, and industrial switchgear applications where controlled fault interruption is critical.

Key Features & Specifications

• Type: SM-4 medium voltage current-limiting fuse with ceramic housing
• Voltage Rating: 23,000V AC
• Current Rating: 100A
• Class Rating: E
• Velocity: Very slow blow characteristic
• Weight: 2 lb
• Standards: IEEE C37.40 compliant
• Applications: Substation equipment, transformer protection, industrial switchgear