S&C Electric 252075R3 - SM-4 Medium Voltage Fuse 14.4kV/50A (Class E Slow-Blow)

The S&C Electric 252075R3 is a medium-voltage SM-4 fuse designed for circuit protection in industrial power distribution systems. Rated for 14,400V AC with a 50A current capacity, this Class E fuse features slow-blow velocity characteristics for controlled interruption of fault currents. Its robust construction includes precision-engineered fusible elements housed in a durable 2 lb enclosure, complying with IEEE/ANSI standards for medium-voltage applications. This fuse is commonly deployed in substations, switchgear, and transformer protection circuits requiring reliable overcurrent protection.

Key Features & Specifications

• Type: SM-4 medium-voltage current-limiting fuse with slow-blow characteristic
• Voltage Rating: 14,400V AC
• Current Rating: 50A
• Class Rating: E
• Weight: 2 lb
• Standards: IEEE/ANSI compliant for medium-voltage applications
• Applications: Industrial power distribution, substation equipment, transformer protection