Littelfuse KLKR-004 - Medium Voltage Fuse 7.2kV 4A (50kA Interrupt Rating)

Littelfuse KLKR-004 is a medium-voltage current-limiting fuse designed for protecting electrical distribution systems against short-circuit faults. It features a 7.2kV voltage rating and 4A current rating, with a compact cylindrical design constructed with precision-engineered silver-sand elements for reliable arc quenching. The fuse meets IEEE C37.41 standards and carries UL/CSA certifications for industrial power applications. Typical uses include transformer protection, motor starters, and feeder circuits in utility and industrial power distribution networks.

Key Features & Specifications

• Type: Current-limiting medium-voltage fuse with silver-sand filler and ceramic body
• Voltage Rating: 7.2kV AC
• Current Rating: 4A
• Dimensions: 152mm length x 38mm diameter
• Standards: IEEE C37.41, UL/CSA certified
• Applications: Transformer protection, motor circuits, distribution feeders
• Fuse Class: K-Link series
• Interrupting Rating: 50kA symmetrical
• Operating Temperature: -40°C to +85°C
• Mounting: Vertical or horizontal

Product Identification

• UPC: 079458260533
• GTIN: 079458260533