Bussmann 170M-331 Series High-Speed Square-Body Fuse, Class aR, 700V

Bussmann 170M-331 Series High-Speed Square-Body Fuse, Class aR, 700V

The Bussmann 170M-331 Series high-speed square-body fuse from Eaton Bussmann is engineered for demanding semiconductor and power electronics protection, rated Class aR for accompanied semiconductor protection. Rated 700V (UL) and 690V (IEC) with a 200kAIC interrupting rating, this fuse is available across amp ratings from 100A to 450A to match a wide range of high-speed protection applications. Its square body design features slotted, center bolted tags along with a top-mounted fuse status indicator for quick visual verification of fuse condition.

Key Features

• Amp Rating Range: Available in ratings from 100A to 450A to match a wide range of high-speed protection applications.
• Square Body Construction: Square body design with slotted, center bolted tags for secure bolted connections.
• Class aR Utilization: Rated Class aR for accompanied semiconductor protection in coordinated fuse protection schemes.
• Dual Voltage Rating: Rated 700V (UL) and 690V (IEC) for use in installations governed by either standard.
• High Interrupting Capacity: 200kAIC interrupting rating delivers robust protection against high fault currents.
• Top Fuse Status Indicator: Integrated top-mounted status indicator allows quick visual confirmation of fuse condition without disconnecting the circuit.
• AC Voltage Type: Designed for use on AC voltage systems.

Certifications & Compliance

• Rated to UL Standards, 700V
• Rated to IEC Standards, 690V

Technical Specifications

• Voltage Type: AC
• Utilization Category: aR (accompanied semiconductor protection)
• Packaging Type: Standard
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No

Typical Applications

• High-Speed Semiconductor Protection
• Industrial Power Electronics and Variable Frequency Drives
• Motor Control Centers and Switchgear Protection
• Commercial and Industrial Electrical Distribution
• International Installations Requiring Dual UL/IEC Compliance

Why Bussmann?

Eaton Bussmann series fuses are engineered for coordinated, high-speed protection of sensitive semiconductor and power electronics loads. With a Class aR utilization rating, dual 700V (UL) / 690V (IEC) voltage ratings, and a 200kAIC interrupting capacity, the 170M-331 Series delivers dependable, code-compliant protection across a broad range of amp ratings from 100A to 450A. The integrated top status indicator adds convenient at-a-glance fuse condition monitoring for maintenance teams working on professional electrical installations.