Bussmann 170E8888 High-Speed aR Fuse-Link, 450A, Size 2, with Indicator

Bussmann 170E8888 High-Speed aR Fuse-Link, 450A, Size 2, with Indicator

The Bussmann 170E8888 is a high-speed fuse-link rated 450A at DC 4000V, built to Size 2 dimensions of 75 x 155 x 414 mm for demanding semiconductor and traction protection duty. Classified aR (accompanied semiconductor protection) and manufactured to IEC standards, this fuse-link includes a top fuse status indicator so maintenance personnel can quickly confirm fuse condition without removing the unit. With a 60 kAIC interrupt rating and a square body with offset bolted tags, it is engineered for high-voltage DC circuits where fast, reliable clearing is critical.

Key Features

• Electrical Rating: 450A at DC 4000V for high-voltage direct current protection.
• Size 2 Dimensions: 75 x 155 x 414 mm fuse-link body for standard Size 2 mounting.
• Utilization Category aR: Accompanied semiconductor protection class per IEC for coordinated device protection.
• High-Speed Operation: Designed for rapid clearing to protect sensitive semiconductor components.
• Top Fuse Status Indicator: Visual indicator shows fuse condition at a glance for faster maintenance checks.
• Interrupt Rating: 60 kAIC for reliable performance under high fault-current conditions.
• Fuse Shape: Square body with offset bolted tags for secure electrical connections.
• Watt Losses: 515 W rated power dissipation.

Certifications & Compliance

• IEC Certified
• EAC Compliant

Technical Specifications

• Application: traction
• Certifications: IEC
• Class: Class aR
• Compliances: EAC
• Fuse Indicator: Top fuse status indicator
• Fuse Shape: Square body, offset bolted tags
• Interrupt Rating: 60 kAIC
• Packaging Type: Standard
• Product Height: 55 mm
• Product Length Depth: 416 mm
• Product Weight: 136.8 g
• Product Width: 77 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Watt Losses: 515 W

Typical Applications

• Traction Power Systems
• DC Traction Motor Protection
• Semiconductor Device Protection (Rectifiers and Converters)
• Rail and Transit Electrical Systems
• High-Speed DC Circuit Protection

Why Bussmann?

Bussmann engineers its 170E8888 fuse-link with IEC-certified performance and EAC compliance for confident specification in high-voltage DC traction and semiconductor protection systems. The aR utilization category, 60 kAIC interrupt rating, and top-mounted status indicator combine to deliver dependable, code-compliant protection with straightforward field verification for professional electrical and rail applications.