Bussmann 170M3240 Eaton Series High-Speed Square Body Fuse, Class aR

Bussmann 170M3240 Eaton Series High-Speed Square Body Fuse, Class aR

The Bussmann 170M3240 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) / 690V (IEC) at 80A with a 100 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 dimensional standards and features a square body with slotted center bolted tags for secure, low-resistance connections. Designed for accompanied semiconductor protection, it delivers the fast-clearing performance required to safeguard power electronics and high-speed circuits.

Key Features

• Voltage Rating: 700V (UL) / 690V (IEC) for high-voltage power electronics circuits.
• Amperage Rating: 80A for reliable overcurrent protection at rated load.
• Interrupt Rating: 100 kAIC to safely clear high fault currents.
• Utilization Category: Class aR (accompanied semiconductor protection) for use alongside coordinated overload protection.
• Fuse Shape: Square body with slotted center bolted tags per DIN 43 620 for secure mounting.
• Clearing I2t: 2500 at 1000V, 3350 at 1250V for predictable let-through energy.
• Pre-Arc I2t: 420 for coordinated fast-acting protection.
• Watt Losses: 25W rated power dissipation.

Certifications & Compliance

• IEC Rated
• CE Marked
• Constructed to DIN 43 620 dimensional standard

Technical Specifications

• Amperage Rating: 80 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 2500 at 1000 V, 3350 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: 420
• Product Height: 65 mm
• Product Length Depth: 305 mm
• Product Weight: 348 g
• Product Width: 145 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 25 W

Typical Applications

• Semiconductor Protection in Power Electronics
• High-Speed Circuit Protection for Rectifiers and Converters
• Industrial Motor Drive Systems
• Panelboard and Switchgear Fuse Protection
• Critical Equipment Requiring Fast-Clearing Overcurrent Protection

Why Bussmann?

Eaton Bussmann series fuses are engineered to precise DIN 43 620 dimensional standards with CE marking and IEC ratings, ensuring dependable fit and performance in demanding power electronics environments. The 170M3240's square body construction with bolted tags and Class aR semiconductor protection design deliver the fast, coordinated clearing professionals rely on for code-compliant electrical installations.