Littelfuse LLSRK-300ID - RK1 Time-Delay Fuse 300A (300kA AIC @600V AC)

Littelfuse LLSRK-300ID is a time-delay fuse designed for high-interrupting capacity circuit protection in industrial power distribution systems. It features a 600V AC voltage rating and a 300A current rating, providing reliable overload and short-circuit protection. The fuse is constructed as a single-barrel, 2.59-inch diameter device with clip-style connections and weighs 15 lb, built with RK1 class rating for time-delay characteristics. It complies with industry standards for high-performance fusing and carries a 300kA interrupting rating at 600V AC. Typical applications include protection of motor circuits, feeders, and branch circuits where high fault currents may be present.

Key Features & Specifications

• Type: LLSRK_ID time-delay fuse, RK1 class, single barrel construction
• Voltage Rating: 600V AC
• Current Rating: 300A
• Dimensions: 2.59-inch diameter
• Standards: RK1 class rating
• Applications: Industrial power distribution, motor circuit protection, feeder and branch circuit protection
• AIC rating: 300kA@600V AC
• Connection: Clip
• Barrels: 1
• Class Rating: RK1
• Diameter: 2.59 inches
• Weight: 15 lb