Bussmann 170M-641 High-Speed Square Body Fuse, Class aR, 200 kAIC

Bussmann 170M-641 High-Speed Square Body Fuse, Class aR, 200 kAIC

The Bussmann 170M-641 is a high-speed square body fuse from the Eaton Bussmann series, engineered for semiconductor protection in demanding industrial power circuits. Built to the Class aR utilization category with a 660V clearing rating and 200 kAIC interrupt rating, this square body fuse uses flush end contacts for compact, standard busbar-style mounting. The family is available in amp ratings from 630A through 2000A, giving engineers the flexibility to match protection levels to circuit demand while keeping consistent flush, standard clearing performance across the range.

Key Features

• Amp Rating Range: Available from 630A to 2000A so the correct rating can be matched to the protected circuit.
• Square Body, Flush End Contacts: Standard flush mounting configuration simplifies busbar-style installation.
• High Interrupt Rating: Rated 200 kAIC with a 660V clearing rating for reliable fault clearing in high-energy AC circuits.
• Class aR Utilization Category: Designed for accompanied semiconductor protection applications.
• Top Fuse Status Indicator: Top-mounted status indicator provides a quick visual check of fuse condition.
• Standard Clearing Characteristic: High-speed clearing behavior suited to semiconductor and power circuit protection.

Certifications & Compliance

• CE Marked

Technical Specifications

• Voltage Type: AC
• Utilization Category: aR (accompanied semiconductor protection)
• Fuse Shape: Square body, flush end contacts
• Product Height: 76 mm
• Application: semiconductor protection
• Insulated Metal Gripping Lugs Imgl: No
• Compliances: CE Marked

Typical Applications

• Semiconductor Protection Circuits
• Industrial Power Distribution Systems
• Rectifier and Converter Protection
• High-Speed Fault Clearing for AC Power Circuits

Why Bussmann?

Bussmann, part of the Eaton Bussmann series, builds this high-speed square body fuse to Class aR utilization standards with a 200 kAIC interrupt rating and CE Marked compliance, giving electrical professionals a dependable option for semiconductor protection across a 630A to 2000A range. The flush end contact design and top fuse status indicator support straightforward installation and at-a-glance condition checks in industrial power distribution equipment. Choosing Bussmann means specifying a fuse family built for consistent, code-aware performance in demanding high-speed protection applications.