Bussmann 170M5111 Eaton Series High-Speed Square Body Fuse, 550A Class aR

Bussmann 170M5111 Eaton Series High-Speed Square Body Fuse, 550A Class aR

The Bussmann 170M5111 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 1100V (IEC) / 1300V (UL) with a 550A amperage rating and a 200 kAIC interrupting rating, this Class aR fuse is built for accompanied semiconductor protection where coordinated, fast-clearing overcurrent response is critical. The square body design features blade end x blade end (slotted center bolted) tags sized to the DIN 43 620 standard for reliable mounting in high-power fuse holders and disconnects.

Key Features

• Amperage Rating: 550A rated for dependable overcurrent protection in high-power semiconductor circuits.
• Dual Voltage Rating: 1100V (IEC) and 1300V (UL) ratings support both international and North American power electronics installations.
• High Interrupting Rating: 200 kAIC breaking capacity for safe operation in high fault-current systems.
• Class aR Utilization: Designed for accompanied semiconductor protection, coordinating with semiconductor devices for precise fault clearing.
• Square Body Construction: Slotted center bolted tag design (blade end x blade end) built to the DIN 43 620 mounting standard.
• Fast-Clearing Performance: Pre-arc I2t of 28,000 A2s and clearing I2t of 190,000 A2s at 660V for rapid response to fault currents.
• Compact Dimensions: 286 mm length x 165 mm width x 66 mm height, approximately 555.7 g.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 550 A
• Application: Semiconductor Protection
• Certifications: IEC Rated
• Clearing I2t: 190000 at 660 V
• Clearing Loss: 80
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre-Arc I2t: 28000
• Product Height: 66 mm
• Product Length/Depth: 286 mm
• Product Weight: 555.6666667 g
• Product Width: 165 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection
• Power Electronics and Drive Systems
• Rectifier and Converter Circuit Protection
• Industrial Power Distribution
• International (IEC/UL) Rated Equipment

Why Bussmann?

Bussmann by Eaton engineers high-speed fuses like the 170M5111 for precise, coordinated protection of semiconductor devices in critical power electronics. With a 200 kAIC interrupting rating, Class aR utilization category, and both IEC and CE compliance, this square body fuse delivers the fast-clearing performance electrical professionals rely on for demanding industrial applications.