Bussmann 170M-525 High-Speed Square Body Fuse, Class aR, 100kAIC

Bussmann 170M-525 High-Speed Square Body Fuse, Class aR, 100kAIC

The Bussmann 170M-525 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial and power-electronics circuits. Rated 1250V (IEC) / 1300V (UL) with a 100 kAIC interrupt rating, this Class aR (accompanied semiconductor protection) fuse is offered across the 170M-525 family in amp ratings from 450A to 800A to match your circuit-protection requirements. Its square body construction with slotted, center-bolted tags simplifies bus-bar and cable-lug mounting in high-current semiconductor and power-conversion assemblies, delivering coordinated, fast-acting overcurrent protection for sensitive power semiconductor devices.

Key Features

• Amp Rating Range: Available from 450A to 800A across the 170M-525 family to match your circuit protection requirements.
• Voltage Rating: 1250V (IEC) / 1300V (UL) for demanding semiconductor protection circuits.
• Interrupt Rating: 100 kAIC high-speed interrupting capacity for reliable short-circuit protection.
• Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of semiconductor devices.
• Square Body Design: Slotted, center-bolted tags for secure bus-bar and cable-lug termination.
• Voltage Type: AC rated for alternating-current power-electronics applications.
• Compact Footprint: 165 mm width x 66 mm height x 286 mm length/depth for standard square-body mounting hardware.

Certifications & Compliance

• Rated for IEC applications at 1250V
• Rated for UL applications at 1300V

Technical Specifications

• Voltage Type: AC
• Product Width: 165 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Packaging Type: Standard
• Fuse Shape: Square body, slotted center bolted tags
• Product Height: 66 mm
• Application: semiconductor protection
• Insulated Metal Gripping Lugs Imgl: No
• Product Length Depth: 286 mm
• Voltage Rating: 690V

Typical Applications

• Semiconductor Protection Circuits
• Power Conversion and Rectifier Equipment
• Industrial Motor Drives and Power Electronics
• High-Speed Circuit Protection for AC Power Systems

Why Bussmann?

Bussmann by Eaton builds the 170M-525 series to deliver coordinated, high-speed semiconductor protection where reliability under fault conditions is critical. With a 100 kAIC interrupt rating, Class aR utilization category, and a rugged square body design with bolted tags, this fuse family is built for demanding industrial power-electronics work.