Bussmann 170L8926 High-Speed Square Body Fuse, Class aR, 400A

Bussmann 170L8926 High-Speed Square Body Fuse, Class aR, 400A

The Bussmann 170L8926 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection, rated 700V (UL) and 690V (IEC) at 400A. Constructed with a square body and center bolted tags, this Class aR (accompanied semiconductor protection) fuse is designed to work alongside coordinated upstream overcurrent devices in demanding power electronics and semiconductor circuits. A top fuse status indicator provides quick visual confirmation of fuse condition during routine inspection, helping reduce downtime in critical power conversion equipment.

Key Features

• Amperage Rating: 400A rating supports high-current semiconductor circuit protection in demanding power electronics applications.
• Voltage Rating: Rated 700V (UL) and 690V (IEC), giving this fuse dual-standard voltage coverage for global power electronics installations.
• Fuse Shape: Square body with center bolted tags for secure, low-resistance terminal connections and simplified busbar mounting.
• Utilization Category: Class aR (accompanied semiconductor protection), intended for coordinated protection of semiconductor devices rather than stand-alone branch circuit duty.
• Status Indicator: Top-mounted fuse status indicator allows technicians to quickly verify fuse condition without disassembly.
• Application: Purpose-built for semiconductor protection in power electronics, drives, and converter equipment.
• Packaging: Standard packaging type for individual unit handling.

Certifications & Compliance

• Rated to UL Standards (700V)
• Rated to IEC Standards (690V)
• Additional Compliances: Contact Factory for Full Details

Technical Specifications

• Amperage Rating: 400 A
• Application: Semiconductor Protection
• Compliances: Contact Factory
• Fuse Shape: Square Body, Center Bolted Tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Product Height: 67 mm
• Product Length/Depth: 284 mm
• Product Weight: 280.33 g
• Product Width: 175 mm
• Utilization Category: aR (Accompanied Semiconductor Protection)
• Voltage Rating: 1000 V
• Voltage Type: AC

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Converter Circuits
• Industrial Drives and Rectifier Assemblies
• Coordinated Protection Alongside Upstream Overcurrent Devices

Why Bussmann?

Bussmann series fuses from Eaton are engineered for reliable, coordinated protection in demanding semiconductor and power electronics applications. The 170L8926's square body construction, center bolted tags, and Class aR utilization category reflect the rigorous design approach professionals expect for code-compliant protection in industrial power conversion systems. With a top-mounted status indicator, technicians can verify fuse condition quickly, supporting safer, more efficient maintenance.