Bussmann 170M3191 Eaton Series High-Speed Square Body Fuse, Class aR, 100A

Bussmann 170M3191 Eaton Series High-Speed Square Body Fuse, Class aR, 100A

The Bussmann 170M3191 is an Eaton series high-speed square body fuse engineered for semiconductor protection applications. Rated 700V (UL) and 690V (IEC), this Class aR fuse delivers a 100A rating with a 100 kAIC interrupting capacity, built to DIN 43 620 dimensional standards. Its square body design with slotted, center-bolted tags supports reliable mounting in high-speed protection circuits requiring accompanied semiconductor protection (aR).

Key Features

• Amperage Rating: 100A for accompanied semiconductor protection circuits.
• Voltage Rating: 700V (UL), 690V (IEC), with a 1250 V voltage rating on the fuse body for high-voltage power electronics.
• Interrupting Rating: 100 kAIC high-speed interrupting capacity for demanding fault-current conditions.
• Utilization Category: Class aR (accompanied semiconductor protection) per DIN 43 620.
• Fuse Shape: Square body construction with slotted, center-bolted tags for a secure, low-resistance connection.
• Energy Let-Through: Pre-arc I2t of 750 and clearing I2t of 4450 at 1000 V, 5950 at 1250 V, for precise semiconductor coordination.
• Watt Losses: 30 W rated power loss.
• Compact Footprint: 305 mm length, 145 mm width, 65 mm height, at 72 g weight.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 100 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 4450 at 1000 V, 5950 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: 750
• Product Height: 65 mm
• Product Length/Depth: 305 mm
• Product Weight: 72 g
• Product Width: 145 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 30 W

Typical Applications

• Semiconductor Protection Circuits
• High-Speed Power Electronics Protection
• Industrial Drives and Rectifier Systems
• Motor Control and Power Conversion Equipment
• Panelboard and Switchgear Protection

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M3191 reflects that engineering standard with IEC-rated, CE-marked construction built to DIN 43 620 specifications. Its high-speed Class aR design provides the precise pre-arc and clearing I2t data professionals need to coordinate semiconductor protection with confidence. Choose Bussmann for code-compliant, reliable performance in critical power electronics applications.