Littelfuse IDSR400 - RK5 Time-Delay Fuse 400A@600V (200kA AIC)

Littelfuse IDSR400 is a UL Class RK5 dual-element time-delay fuse designed for industrial circuit protection with visual indication. It features a 600V AC rating and 400A current capacity with a 200kA interrupting rating at 600V for high-fault protection. The fuse has a cylindrical design with a 2.59" diameter and 3.48 lb weight, constructed for durability in demanding environments. Compliant with UL Standard 248-12 and CSA certifications, it meets rigorous safety requirements. Typical applications include motor protection, transformer circuits, and industrial power distribution systems where time-delay characteristics and fault indication are critical.

Key Features & Specifications

• Type: UL Class RK5 dual-element time-delay fuse with visual indication
• Voltage Rating: 600V AC
• Current Rating: 400A
• Dimensions: 2.59" diameter
• Standards: UL 248-12, CSA certified
• Applications: Motor protection, transformer circuits, industrial power distribution
• Class Rating: RK5
• Barrels: 1
• AIC rating: 200kA@600V
• Weight: 3.48 lb
• Certification: UL Listed/CSA

Product Identification

• UPC: 007945801582
• GTIN: 00079458015829