Bussmann 170M3922 Eaton 170M Series High-Speed Square Body Fuse, 63A RMS, Class aR

Bussmann 170M3922 Eaton 170M Series High-Speed Square Body Fuse, 63A RMS, Class aR

The Bussmann 170M3922 is an Eaton Bussmann series 170M high-speed fuse engineered for demanding power electronics protection, rated 700V (UL) and 690V (IEC) with a 63A RMS current rating and 150 kAIC interrupting capacity. Built to Class aR specifications in a square body flush end contact configuration, this non-indicating fuse features a -GKN/- type K indicator for micro applications and a flush design for compact panel integration. It is well suited for DC common bus systems, DC drives, power converters/rectifiers, and reduced voltage starters where fast, reliable overcurrent protection is critical.

Key Features

• High-Speed Protection: Eaton Bussmann series 170M design delivers rapid clearing for sensitive power electronics and semiconductor circuits.
• Dual Voltage Rating: Rated 700V (UL) and 690V (IEC) for flexibility across UL and IEC-compliant electrical systems.
• Current Rating: 63A RMS with a 150 kAIC interrupting rating for high fault-current environments.
• Square Body Flush End Contact: Compact, flush-mount design simplifies installation in space-constrained enclosures.
• Non-Indicating Design: Includes a -GKN/- type K indicator for micro applications.
• Class aR Rating: Purpose-built for protection of semiconductor devices and power conversion equipment, not for general branch-circuit use.
• I²t Ratings: Pre-arc I²t of 215 and clearing I²t of 1300 at 1000V for precise coordination with semiconductor let-through limits.
• Watt Loss: 25W rated watt loss for accurate thermal system design.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
• Certifications: IEC Rated
• Clearing I²t: 1300 at 1000 V
• Compliances: CE Marked
• Packaging Type: Standard
• Pre Arc I²t: 215
• Product Height: 2.087 in
• Product Length Depth: 5.433 in
• Product Weight: 1.6456 lb
• Product Width: .315 in
• Voltage Rating: 700 V (UL), 690 V (IEC)
• Watt Losses: 25 W

Typical Applications

• DC Common Bus Systems
• DC Drives
• Power Converters and Rectifiers
• Reduced Voltage Starters
• Industrial Power Electronics Protection

Why Bussmann?

Bussmann series 170M high-speed fuses are engineered for the precise coordination demanded by power electronics, delivering IEC-rated, CE-marked performance backed by Class aR construction. With a 150 kAIC interrupting rating and defined I²t characteristics, the 170M3922 gives engineers the data needed to protect semiconductor devices and power conversion equipment with confidence. Choose Bussmann for dependable, code-compliant overcurrent protection in demanding industrial applications.