Bussmann 170M2668 High Speed Square Body Fuse, 700V/690V, 250A Class aR

Bussmann 170M2668 High Speed Square Body Fuse, 700V/690V, 250A Class aR

The Bussmann 170M2668 is an Eaton Bussmann series high speed square body fuse engineered for semiconductor protection in demanding industrial power applications. Rated 700V (UL) / 690V (IEC) with a 250A amperage rating and a 200 kAIC interrupting rating, this Class aR fuse meets DIN 43 620 dimensional standards and carries IEC Rated and CE Marked compliance. Blade end X blade end terminals and a compact square body design deliver reliable, code-compliant protection for accompanied semiconductor circuits.

Key Features

• Compact Dimensions: 100 mm length/depth x 30 mm width x 67 mm height square body footprint suited to space-constrained panels and drive enclosures.
• Durable Square Body Construction: Square body fuse shape with slotted offset bolted tags and blade end X blade end terminals for secure, high-current connections.
• High-Speed Class aR Protection: Class aR utilization category (accompanied semiconductor protection) built to DIN 43 620 form factor for fast-acting semiconductor circuit protection.
• Electrical Ratings: 700V (UL) / 690V (IEC) AC voltage rating, 250A amperage rating, and 200 kAIC interrupting rating for high-fault-current environments.
• Fuse Performance Data: Pre-arc I2t of 6250 and clearing I2t of 42000 at 660V deliver predictable current-limiting performance under fault conditions.
• Low Watt Loss: 645W watt loss rating supports efficient thermal performance in continuous-duty service.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 250 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 42000 at 660 V
• Compliances: CE Marked
• Fuse Shape: Square body, slotted offset bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 6250
• Product Height: 67 mm
• Product Length Depth: 100 mm
• Product Weight: 223.6666667 g
• Product Width: 30 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC
• Watt Losses: 645 W

Typical Applications

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

Why Bussmann?

Bussmann, an Eaton brand, engineers the 170M2668 to DIN 43 620 dimensional standards with IEC Rated and CE Marked compliance for dependable performance in accompanied semiconductor protection applications. The square body construction, blade end X blade end terminals, and documented Class aR fault-clearing characteristics make this fuse a trusted choice for industrial power electronics where fast, reliable circuit protection is critical.