Bussmann 170M-531 High-Speed Square Body Fuse, Class aR

Bussmann 170M-531 High-Speed Square Body Fuse, Class aR

The Bussmann 170M-531 High-Speed Square Body Fuse is part of the Eaton Bussmann series, engineered for fast-acting protection of semiconductor devices in demanding power electronics applications. Rated 700V (UL) and 690V (IEC) with a 200 kAIC interrupt rating, this Class aR, utilization category aR fuse is built to accompany semiconductor protection where high-speed clearing is critical. This family is available in 315A, 700A, and 1000A ratings, giving engineers a range of current options within the same square body, high-speed design.

Key Features

• Amp Rating Range: Available in 315A, 700A, and 1000A ratings to match a range of semiconductor circuit-protection requirements.
• High-Speed Square Body Design: Square body fuse construction built for fast clearing in high-speed protection applications.
• Class aR Utilization: Utilization category aR (accompanied semiconductor protection) for use alongside dedicated semiconductor protection schemes.
• Dual Voltage Rating: Rated 700V (UL) and 690V (IEC) for use in both UL- and IEC-governed installations.
• High Interrupt Rating: 200 kAIC interrupting rating supports demanding fault-current environments.
• AC Voltage Type: Rated for AC voltage applications.
• Standard Packaging: Offered in standard packaging type for straightforward stocking and handling.

Certifications & Compliance

• 700V Rating per UL
• 690V Rating per IEC

Technical Specifications

• Voltage Type: AC
• Utilization Category: aR (accompanied semiconductor protection)
• Packaging Type: Standard
• Application: semiconductor protection
• Insulated Metal Gripping Lugs Imgl: No

Typical Applications

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

Why Bussmann?

Eaton Bussmann series fuses are engineered for reliable, code-compliant circuit protection across demanding industrial applications. With Class aR high-speed performance, a 200 kAIC interrupt rating, and dual 700V (UL) / 690V (IEC) voltage ratings, the 170M-531 series delivers dependable semiconductor protection professionals can specify with confidence.