Bussmann DFJ Series Class J High-Speed Fuse, Non-Indicating

Bussmann DFJ-20 Class J High-Speed Fuse

The Bussmann DFJ-20 is an Eaton Bussmann series Class J high-speed fuse engineered for demanding overcurrent protection in both AC and DC power systems. Rated 20A, this non-indicating fuse carries a voltage rating of 600 Vac or less and 450 Vdc or less, giving it broad application across AC and DC electrical distribution equipment. The DFJ-20 delivers a high interrupt rating of 200 kAIC at 600 Vac and 100 kAIC at 450 Vdc, allowing it to safely clear fault currents in systems with significant available fault energy. Housed in a durable melamine tube, this Class J high-speed fuse provides fast, dependable response to overcurrent conditions, helping protect conductors, equipment, and personnel in industrial and commercial power distribution systems.

Key Features

• Amperage Rating: 20A current rating for reliable overcurrent protection in AC and DC circuits.
• Voltage Rating: Rated 600 Vac or less and 450 Vdc or less, suitable for a wide range of AC and DC power distribution equipment.
• High Interrupt Rating: 200 kAIC at 600 Vac and 100 kAIC at 450 Vdc for safe operation in high fault-current environments.
• Class J Design: Class J high-speed fuse form factor for use with compatible Class J fuse blocks, holders, and disconnects.
• High-Speed Fuse: High-speed fusing characteristic engineered for rapid clearing of fault currents.
• Non-Indicating: Non-indicating design without a blown-fuse indicator window.
• Melamine Tube Construction: Durable melamine tube body supports consistent electrical and mechanical performance.
• Reliable Performance: High-speed response makes the DFJ-20 well suited for protecting power electronics, solid-state equipment, and other loads sensitive to fault-current let-through.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Industrial Power Distribution Systems
• Motor Control and Drive Circuits
• Power Electronics and Semiconductor Equipment Protection
• Panelboards and Switchgear
• High Fault-Current Industrial Environments
• Commercial and Industrial Electrical Systems

Why Bussmann?

Bussmann fuses from Eaton are engineered to deliver dependable overcurrent protection backed by high interrupt ratings and rugged melamine tube construction. The DFJ-20 Class J high-speed fuse combines a 20A rating with 200 kAIC and 100 kAIC interrupt performance, helping protect critical electrical equipment from damaging fault currents in both AC and DC power systems. Choose Bussmann for consistent, high-speed fuse performance in demanding professional electrical applications.