Littelfuse LLSRK-300 - Class RK1 Fuse 300A@600V (300kA AIC)

Littelfuse LLSRK-300 is a Class RK1 low-voltage fuse designed for high-interrupting circuit protection in industrial power distribution systems. It features a 600V AC rating with a 300A current capacity and 300kA interrupting rating at 600V AC for reliable short-circuit protection. The fuse has a compact cylindrical design with 2.59" diameter and clip-style connections, constructed as a single-barrel unit weighing 15 lb. It complies with industry standards for RK1 fuses, providing time-delay characteristics to withstand temporary overloads. Typical applications include motor control centers, switchgear, and panelboards requiring high fault current protection.

Key Features & Specifications

• Type: Class RK1 time-delay fuse with ceramic body and sand filler
• Voltage Rating: 600V AC
• Current Rating: 300A
• Dimensions: 2.59" diameter
• Standards: UL/CSA listed RK1 class
• Applications: Industrial power distribution, motor protection, switchgear
• Connection: Clip
• Barrels: 1
• AIC rating: 300kA@600V AC
• Class Rating: RK1
• Weight: 15 lb