Bussmann 170M3070 High Speed Square Body Fuse, Class aR, 450A

Bussmann 170M3070 High Speed Square Body Fuse, Class aR, 450A

The Bussmann 170M3070 is an Eaton Bussmann series high speed square body fuse built for demanding semiconductor protection duty. Rated 700V (UL) / 690V (IEC) with a 450A amperage rating and a 200 kAIC interrupting rating, this Class aR fuse is intended for accompanied semiconductor protection in high speed switching circuits. A top-mounted fuse status indicator provides quick visual condition checks, while the blade end x blade end terminal style and DIN 43 620 square body dimensions support standardized busbar mounting.

Key Features

• Electrical Rating: 700V (UL) / 690V (IEC) with a 450A amperage rating and a 200 kAIC interrupting rating for high fault-current environments.
• Class aR Utilization Category: Engineered for accompanied semiconductor protection (aR) in high speed switching applications.
• Fuse Shape: Square body with slotted, center bolted tags built to DIN 43 620 dimensions for standardized mounting.
• Terminal Configuration: Blade end x blade end connection style.
• Status Indicator: Top-mounted fuse status indicator for quick visual verification of fuse condition.
• Compact Dimensions: 58 mm height x 104 mm width x 45 mm length/depth, weighing 319 g.
• Let-Through Characteristics: Pre-arc I2t of 21,000 and clearing I2t of 140,000 at 660V, with a clearing loss of 65.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 450 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 140000 at 660 V
• Clearing Loss: 65
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre Arc I2t: 21000
• Product Height: 58 mm
• Product Length Depth: 45 mm
• Product Weight: 319 g
• Product Width: 104 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection Circuits
• High Speed Power Electronics Protection
• Industrial Power Conversion Equipment
• Motor Drive and Rectifier Systems

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M3070 reflects that standard with its DIN 43 620 square body construction, Class aR utilization category, and CE marked, IEC rated performance. The top-mounted fuse status indicator and clearly specified let-through characteristics give engineers the data needed to protect sensitive semiconductor equipment with confidence in demanding industrial power applications.