Bussmann KTN-R-400 - RK1 Class Time-Delay Fuse 400A 250V (200kA AIC)

Bussmann KTN-R-400 is a current-limiting, time-delay fuse designed for comprehensive circuit protection in industrial power distribution systems. This RK1 class fuse operates at 250V AC with a 400A current rating and features a 200kA interrupting capacity at rated voltage for reliable fault protection. The single-barrel construction measures 8.63 inches in length with a 2.06-inch diameter cylindrical body, weighing 1 lb for robust physical durability. Certified to UL, CSA, and CE standards, this LIMITRON family fuse ensures compliance with international safety requirements. Typical applications include motor branch circuits, feeder circuits, and industrial control panels where time-delay characteristics prevent nuisance tripping during motor starting currents.

Key Features & Specifications

• Type: Current-limiting time-delay fuse, RK1 class, single barrel construction
• Voltage Rating: 250V AC
• Current Rating: 400A
• Dimensions: 8.63" length × 2.06" diameter
• Standards: UL, CSA, CE certified
• Applications: Motor branch circuits, feeder circuits, industrial control panels
• AIC rating: 200kA @ 250V
• Class Rating: RK1
• Barrels: 1
• Diameter: 2.06 inches
• Weight: 1 lb
• Family: LIMITRON
• Item Subcategory: Low Voltage Fuse

Product Identification

• UPC: 051712407250
• GTIN: 00051712407250