Bussmann KTN-R-40 - RK1 Current-Limiting Fuse 40A@250V (200kA AIC)

Bussmann KTN-R-40 is a current-limiting fuse designed for industrial circuit protection with fast-acting RK1 classification. Rated for 250V AC systems with a 40A current capacity, it features a compact cylindrical design measuring 0.81" diameter × 3" height (20.6mm × 76.2mm) and 1.9 lb weight, constructed with durable materials for reliable operation. UL-listed and compliant with industry standards, this 200kA interrupting capacity fuse is engineered for motor control centers, switchgear, and panelboard applications requiring high fault current protection.

Key Features & Specifications

• Type: Current-limiting RK1 class fuse, single barrel construction
• Voltage Rating: 250V AC
• Current Rating: 40A
• Dimensions: 0.81" × 3" × 0.81" (20.6mm × 76.2mm × 20.6mm)
• Standards: UL 248-1 listed
• Applications: Motor circuits, transformers, industrial control panels
• AIC rating: 200kA at 250V
• Class Rating: RK1
• Weight: 1.9 lb (0.86 kg)
• Diameter: 0.81" (20.6mm)

Product Identification

• UPC: 051712407090
• GTIN: 00051712407090