Bussmann 170M-864 Eaton Series Class aR High-Speed Square Body Fuse, 630A/690V

Bussmann 170M-864 Eaton Series Class aR High-Speed Square Body Fuse, 630A/690V

The Bussmann 170M-864 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power electronics protection duty. Rated 630A at 690 Vac / 500 Vdc, this Class aR fuse carries an aR (accompanied semiconductor protection) utilization category, purpose-built to protect power rectifiers and other semiconductor devices from damaging fault currents. It combines square body construction with knife blade contacts and a top-mounted fuse status indicator so installers can visually confirm fuse condition without removing the fuse from its holder.

Key Features

• Amperage & Voltage Rating: 630A rated at 690 Vac / 500 Vdc, delivering high-speed interruption for power electronics and rectifier circuits.
• Class aR Utilization Category: aR (accompanied semiconductor protection) rating matched to the stated application of protecting power rectifiers.
• Fuse Shape: Square body with knife blade contacts for a secure, low-resistance, high-current connection in compatible fuse holders and disconnects.
• Top Fuse Status Indicator: Integrated top-mounted indicator gives a quick visual read on fuse condition, reducing troubleshooting time.
• Compact Footprint: Measures 76 mm high x 95 mm wide x 168 mm in length/depth, suited to space-constrained rectifier and power electronics enclosures.
• Packaging Type: Supplied in standard packaging.

Technical Specifications

• Application: Protection of power rectifiers
• Utilization Category: aR (accompanied semiconductor protection)
• Product Height: 76 mm
• Product Length Depth: 168 mm
• Voltage Type: AC
• Voltage Rating: 1000V
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Fuse Shape: Square body, knife blade contacts
• Compliances: Contact factory
• Product Width: 95 mm

Typical Applications

• Power Rectifier Protection
• Semiconductor Device Protection
• Industrial Power Electronics Panels
• High-Speed Circuit Protection Systems
• AC/DC Power Conversion Equipment
• Panel-Mounted Fuse Holders and Disconnects

Why Bussmann?

Bussmann by Eaton engineers the 170M-864 within its high-speed fuse series specifically for rigorous semiconductor protection duty, pairing square body, knife blade construction with a Class aR utilization rating built for accompanied protection of power rectifiers. The top-mounted fuse status indicator supports fast field verification, helping electrical professionals maintain reliable, code-conscious protection throughout demanding power electronics applications.