Bussmann KTN-R-250 Class RK1 Current-Limiting Fuse, 250A, 250V

Bussmann KTN-R-250 Class RK1 Current-Limiting Fuse, 250A

The Bussmann KTN-R-250 is part of the Eaton Bussmann Series KTN-R line of current-limiting, fast-acting fuses engineered for dependable overcurrent protection in demanding industrial and commercial electrical systems. Rated 250A at 250 Vac and 250 Vdc, this Class RK1 fuse delivers a high interrupt rating of 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc, making it well suited for circuits and equipment with significant available fault current. The current-limiting, fast-acting design responds quickly to overcurrent and short-circuit conditions, helping to reduce peak let-through current and energy passed on to downstream conductors, switchgear, and connected equipment. Durable 70/30 brass end caps provide a secure, corrosion-resistant connection point for consistent, long-term circuit performance in RK1-rated fuse holders, switches, and panelboards.

Key Features

• Amperage Rating: 250A rating delivers dependable overcurrent protection for demanding branch-circuit and equipment applications.
• Voltage Rating: Rated 250 Vac and 250 Vdc, allowing use across both alternating current and direct current systems.
• Current-Limiting, Fast-Acting Design: Responds quickly to fault conditions, limiting peak let-through current and energy to help protect downstream conductors and equipment.
• High Interrupt Rating: 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc supports reliable performance in systems with high available fault current.
• Class RK1 Fuse: Dimensionally interchangeable Class RK1 construction simplifies replacement in existing RK1-rated fuse blocks, holders, and disconnect switches.
• Brass End Caps: 70/30 brass end caps provide a durable, corrosion-resistant terminal connection for consistent conductivity over time.
• Eaton Bussmann Series KTN-R: Part of the established KTN-R fuse series designed specifically for current-limiting overcurrent protection.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Industrial and Commercial Electrical Distribution Panels
• Motor and Branch Circuit Overcurrent Protection
• Short-Circuit and Fault Current Protection
• Panelboards and Switchboards
• OEM Equipment Requiring Class RK1 Fuses

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the KTN-R Series current-limiting fuses are engineered to deliver fast-acting, Class RK1 performance backed by high interrupt ratings of 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc. With durable 70/30 brass end caps and a current-limiting, fast-acting design, the Bussmann KTN-R-250 helps protect wiring, switchgear, and equipment from damaging fault currents in demanding electrical systems, offering the dependable overcurrent protection that professionals rely on for critical circuit protection.