Littelfuse LLSRK-400 - Class RK1 Fuse 400A (300kA AIC @600V)

Littelfuse LLSRK-400 is a Class RK1 fuse from the Powr-Gard family designed for low voltage circuit protection with a 400A current rating and 600V voltage rating. Its high interrupting rating of 300kA at 600V AC provides reliable protection against short-circuits and overloads in industrial power distribution systems. The fuse features a single-barrel construction with clip-style connections and measures 2.59 inches in diameter with a weight of 15 lb, ensuring robust performance in demanding environments. It complies with industry standards for RK1 fuses, making it suitable for service entrance equipment, motor control centers, and industrial panelboards where high fault current protection is required.

Key Features & Specifications

• Type: Class RK1 current-limiting fuse, single barrel construction
• Voltage Rating: 600V AC
• Current Rating: 400A
• Dimensions: 2.59" diameter
• Standards: Class RK1 fuse standards
• Applications: Industrial power distribution, service entrance equipment, motor control centers
• AIC rating: 300kA@600V AC
• Connection: Clip style
• Barrels: 1
• Class Rating: RK1
• Weight: 15 lb

Product Identification

• Manufacturer: Littelfuse
• Family: Powr-Gard
• Type: LLSRK