Bussmann 170M5190 Eaton High-Speed Square Body Fuse, Class aR, 315A

Bussmann 170M5190 Eaton High-Speed Square Body Fuse, Class aR, 315A

The Bussmann 170M5190 is an Eaton Bussmann series high-speed square body fuse built for demanding semiconductor protection applications. Rated 700V (UL) / 690V (IEC) with a 315A amperage rating and a 100 kAIC interrupt rating, this Class aR fuse meets the DIN 43 620 form factor and is IEC Rated with CE Marked compliance for use across industrial and commercial power electronics systems.

Key Features

• Amperage Rating: 315A high-speed rating delivers dependable overcurrent protection for semiconductor circuits.
• Voltage Rating: 700V (UL) / 690V (IEC), with a 1250V AC voltage rating for broad system compatibility.
• Interrupt Rating: 100 kAIC supports reliable short-circuit interruption in high-fault-current environments.
• Utilization Category: Class aR (accompanied semiconductor protection) built to the DIN 43 620 standard.
• Fuse Shape: Square body construction with slotted, center bolted tags for a secure, low-resistance connection.
• Clearing I²t: 77,500 A²s at 1000V and 105,000 A²s at 1250V, with a Pre-Arc I²t of 13,000 A²s.
• Watt Losses: Rated at 75W for predictable thermal performance in enclosed equipment.
• Compact Footprint: 284 mm length/depth x 175 mm width x 67 mm height, weighing 634 g.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 315 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 77500 at 1000 V, 105000 at 1250 V
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre Arc I2t: 13000
• Product Height: 67 mm
• Product Length Depth: 284 mm
• Product Weight: 634 g
• Product Width: 175 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 75 W

Typical Applications

• Semiconductor Protection
• Power Electronics and Variable Frequency Drives
• Industrial Motor Control Circuits
• High-Speed Short-Circuit Protection
• Commercial and Industrial Electrical Systems

Why Bussmann?

Bussmann by Eaton engineers the 170M5190 to the DIN 43 620 square body form factor with a 100 kAIC interrupt rating, Class aR utilization category, and CE Marked, IEC Rated compliance for demanding semiconductor protection duty. Its documented clearing and pre-arc I²t values give engineers the data needed to coordinate protection with confidence, making it a dependable choice for professional electrical and power electronics installations.