Bussmann 170M-642 Series High-Speed Square Body Fuse, Class aR

Bussmann 170M-642 Series High-Speed Square Body Fuse, Class aR

The Bussmann 170M-642 series high-speed square body fuse is engineered for semiconductor device protection in demanding power electronics applications. Rated 700V (UL) and 690V (IEC) with a 200 kAIC interrupt rating, this Class aR fuse uses a square body design with flush end contacts and a top-mounted fuse status indicator for fast visual verification. The 170M-642 series is available in amp ratings from 500A to 1800A to match a range of semiconductor circuit protection needs, and is AC voltage type with CE marking and IEC-rated compliance.

Key Features

• Amp Rating Range: available in 500A to 1800A ratings within the 170M-642 series to match application current demand.
• Square Body Design: square body construction with flush end contacts for compact, space-efficient panel and enclosure mounting.
• Dual Voltage Rating: 700V (UL) and 690V (IEC) rating supports both UL and IEC compliant installations.
• High Interrupt Capacity: 200 kAIC breaking capacity for reliable protection in high fault-current semiconductor circuits.
• Class aR Utilization: Class aR (accompanied semiconductor protection) utilization category designed specifically for protecting semiconductor devices.
• Top Fuse Status Indicator: top-mounted status indicator allows quick visual confirmation of fuse condition without disassembly.
• AC Voltage Type: rated for alternating current power distribution and semiconductor protection circuits.
• Compact Dimensions: 95 mm width x 76 mm height x 168 mm length/depth body footprint.

Certifications & Compliance

• CE Marked
• IEC Rated

Technical Specifications

• Voltage Type: AC
• Product Width: 95 mm
• Product Height: 76 mm
• Product Length Depth: 168 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Fuse Shape: Square body, flush end contacts
• Application: semiconductor protection
• Packaging Type: Standard
• Insulated Metal Gripping Lugs Imgl: No
• Compliances: CE Marked
• Certifications: IEC Rated

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Variable Frequency Drives
• Industrial Motor Control Circuits
• High Fault-Current Distribution Systems
• Panelboard and Switchgear Protection

Why Bussmann?

Bussmann engineers the 170M-642 series with a robust square body construction, dual UL/IEC voltage ratings, and a 200 kAIC interrupt rating to deliver dependable, code-compliant protection for semiconductor circuits. The top fuse status indicator and Class aR utilization category reflect a design purpose-built for accompanied semiconductor device protection, backed by CE marking and IEC-rated compliance for professional electrical and power electronics installations.