Bussmann 170M4111 Eaton Series High-Speed Square Body Fuse, 350A Class aR

Bussmann 170M4111 Eaton Series High-Speed Square Body Fuse, 350A Class aR

The Bussmann 170M4111 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power electronics protection. Rated 700V (UL) / 690V (IEC) and 350A with a 200 kAIC interrupting rating, this Class aR fuse uses a blade end X blade end terminal configuration built to the DIN 43 620 standard, making it purpose-built for accompanied semiconductor protection applications.

Key Features

• High-Speed Electrical Rating: 700V (UL) / 690V (IEC) at 350A with a 200 kAIC interrupting rating for demanding fault-current environments.
• Class aR Utilization Category: Designed for accompanied semiconductor protection, safeguarding power electronic devices from overcurrent conditions.
• Square Body Construction: Square body fuse shape with slotted center bolted tags for a secure, low-resistance connection.
• Blade End X Blade End Terminals: Blade-to-blade termination built to the DIN 43 620 standard for reliable mounting in compatible fuse holders.
• Clearing I2t: 59,000 A²s at 660V, with a Pre-Arc I2t of 8,500 A²s for predictable, coordinated clearing performance.
• Clearing Loss: Rated clearing loss of 60 (W) supports efficient thermal performance in the fuse assembly.
• Compact Footprint: Product dimensions of 245 mm length/depth x 142 mm width x 62 mm height at approximately 498.7 g.

Certifications & Compliance

• UL Recognized
• CE Marked

Technical Specifications

• Amperage Rating: 350 A
• Voltage Rating: 690 V
• Voltage Type: AC
• Utilization Category: aR (accompanied semiconductor protection)
• Application: semiconductor protection
• Fuse Shape: Square body, slotted center bolted tags
• Certifications: UL Recognized
• Compliances: CE Marked
• Clearing I2t: 59000 at 660 V
• Pre Arc I2t: 8500
• Clearing Loss: 60
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Product Height: 62 mm
• Product Length Depth: 245 mm
• Product Width: 142 mm
• Product Weight: 498.6666667 g

Typical Applications

• Semiconductor Protection
• Accompanied (aR) Overcurrent Protection for Power Semiconductors
• High-Speed Fuse Protection in Power Electronic Assemblies
• Industrial Equipment Requiring 200 kAIC Interrupting Capacity
• DIN 43 620 Blade-Mount Fuse Holder Systems

Why Bussmann?

Bussmann by Eaton builds high-speed semiconductor fuses like the 170M4111 to exacting standards, combining a robust square body, slotted center bolted tags, and blade end X blade end DIN 43 620 terminals for dependable, code-aware performance. With UL Recognized status, CE Marking, and a Class aR rating engineered specifically for accompanied semiconductor protection, this fuse delivers the coordinated clearing characteristics that power electronics and industrial control systems depend on for reliable, professional-grade protection.