Bussmann 170M5068 Eaton Series High-Speed Square Body Fuse, 1250A, Class aR

Bussmann 170M5068 Eaton Series High-Speed Square Body Fuse, 1250A, Class aR

The Bussmann 170M5068 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 1250A with a dual voltage rating of 700V (UL) and 690V (IEC), this Class aR fuse delivers a 200 kAIC interrupt rating for high fault-current environments. Its blade end X blade end terminals conform to DIN 43 620, and a top fuse status indicator provides quick visual confirmation of fuse condition.

Key Features

• Amperage Rating: 1250A for high-current semiconductor protection circuits.
• Dual Voltage Rating: 700V (UL) and 690V (IEC) for use across UL- and IEC-rated systems.
• Interrupt Rating: 200 kAIC supports reliable clearing in high fault-current applications.
• Utilization Category: Class aR (accompanied semiconductor protection) for coordinated device protection.
• Connection: Blade end X blade end terminals conforming to DIN 43 620 mounting dimensions.
• Fuse Status Indicator: Top-mounted indicator allows quick visual identification of an open fuse.
• Fuse Shape: Square body construction with slotted center bolted tags for a secure connection.
• Let-Through Characteristics: Pre-arc I2t of 365,000 and clearing I2t of 2,400,000 at 660V, with a clearing loss of 130.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 1250 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 2400000 at 660 V
• Clearing Loss: 130
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre Arc I2t: 365000
• Product Height: 66 mm
• Product Length/Depth: 286 mm
• Product Weight: 594 g
• Product Width: 165 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 600 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection in Power Conversion Equipment
• High-Speed Drive and Rectifier Circuits
• Industrial Systems Requiring Class aR Coordinated Fuse Protection
• High Fault-Current Electrical Systems Rated to 200 kAIC
• UL- and IEC-Rated Electrical Installations

Why Bussmann?

Bussmann by Eaton engineers this 170M5068 high-speed fuse to deliver precise, coordinated protection for semiconductor devices where fast clearing and accurate let-through data matter most. With CE marking, IEC rating, and documented pre-arc and clearing I2t values, it gives electrical professionals the specification confidence needed for demanding, code-compliant industrial installations.