Bussmann 170M3269 Eaton Series High Speed Square Body Fuse, Class aR, 400A

Bussmann 170M3269 Eaton Series High Speed Square Body Fuse, Class aR, 400A

The Bussmann 170M3269 is an Eaton series high speed square body fuse engineered for semiconductor protection in industrial power systems. Rated 1250V (IEC) and 1300V (UL) with a 400A amperage rating and a 200 kAIC interrupting rating, this Class aR fuse is built to DIN 43 620 dimensional standards with blade end x blade end terminations for secure, repeatable circuit connections. The square body design features slotted, center bolted tags, and the fuse carries CE marked, IEC rated compliance, suited for accompanied semiconductor protection in industrial equipment requiring fast, predictable fault clearing.

Key Features

• Dual Voltage Rating: Rated 1250V (IEC) and 1300V (UL) for use across international and domestic power distribution circuits.
• 400A Amperage Rating: Provides dependable overcurrent protection at 400A with a 200 kAIC interrupting rating for high fault-current environments.
• Class aR Utilization Category: Purpose-built for accompanied semiconductor protection.
• Square Body Construction: Slotted, center bolted tags with blade end x blade end terminations for a secure connection.
• DIN 43 620 Dimensions: Manufactured to DIN 43 620 standard dimensions for standard fuse mounting hardware.
• Fast-Acting Clearing: Pre-arc I2t of 15000 and clearing I2t of 105000 at 660V for fast fault clearing.
• Product Dimensions: Measures 305 mm in length/depth, 145 mm in width, and 65 mm in height, weighing 340.5 g.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 400 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 105000 at 660 V
• Clearing Loss: 60
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 15000
• Product Height: 65 mm
• Product Length Depth: 305 mm
• Product Weight: 340.5 g
• Product Width: 145 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection Circuits
• Industrial Power Conversion Equipment
• Motor Drive and Rectifier Protection
• Commercial and Industrial Electrical Installations
• High Speed Overcurrent Protection Systems

Why Bussmann?

Bussmann by Eaton engineers the 170M3269 to DIN 43 620 dimensional standards with CE marked, IEC rated construction, giving electrical professionals a dependable, code-compliant fuse for semiconductor protection duty. The square body, blade end x blade end design combined with defined pre-arc and clearing I2t values ensures predictable, fast-acting performance in demanding power circuits. Choose Bussmann for consistent quality and reliable overcurrent protection in critical semiconductor systems.