Littelfuse LLNRK300 - RK1 Fuse 300A (200kA@250V Interrupt Rating)

Littelfuse LLNRK300 is a low-voltage RK1 class fuse designed for high-current circuit protection in industrial applications. It features a 300A current rating and 250V voltage rating with a 200kA interrupting capacity at rated voltage, housed in a durable 8 5/8-inch long by 2 3/32-inch diameter barrel construction. The fuse meets RK1 standards for time-delay characteristics and features a 2 lb industrial-grade design for reliable performance in demanding environments. Typical applications include motor branch circuits, transformer protection, and industrial power distribution systems where high fault current protection is required.

Key Features & Specifications

• Type: RK1 time-delay fuse with single barrel construction
• Voltage Rating: 250V AC
• Current Rating: 300A
• Dimensions: 8 5/8" L x 2 3/32" D (219.1mm x 53.2mm)
• Standards: UL/CSA Listed RK1 class
• Applications: Industrial power distribution, motor protection, transformer circuits
• Class Rating: RK1
• AIC rating: 200kA@250V
• Weight: 2 lb (0.91 kg)
• Country of Origin: Mexico

Product Identification

• UPC: 07945833091
• GTIN: 00079458330915