Bussmann 170M-271 High-Speed Square Body Fuse, Class aR, 700V

Bussmann 170M-271 High-Speed Square Body Fuse, Class aR, 700V

The Bussmann 170M-271 High-Speed Square Body Fuse from Eaton's Bussmann series is engineered for accompanied semiconductor protection, combining a 700V (UL) / 690V (IEC) voltage rating with a Class aR utilization category built to DIN 43 620 dimensional standards. This square body fuse features flush end contacts and a top fuse status indicator for quick visual confirmation of fuse condition, and is available in 160A, 200A, 315A, and 400A ratings to match your circuit protection requirements. CE marked for compliance, this fuse delivers fast-acting, high-speed protection for demanding industrial power electronics applications where reliable semiconductor protection is critical.

Key Features

• Amp Rating Range: Available in 160A, 200A, 315A, and 400A ratings to fit a range of semiconductor protection circuits.
• Square Body Construction: Square body design with flush end contacts for reliable, space-saving mounting in high-speed fuse holders.
• Class aR Utilization: Class aR (accompanied semiconductor protection) rating designed for high-speed fault current interruption alongside upstream backup protection.
• Dual Voltage Rating: Rated 700V (UL) and 690V (IEC) for use across both UL and IEC-governed installations.
• 200 kAIC Interrupting Rating: High interrupting capacity supports demanding short-circuit protection needs in industrial power systems.
• Top Fuse Status Indicator: Built-in top status indicator provides fast visual confirmation of a blown fuse, reducing troubleshooting time.
• DIN 43 620 Dimensions: Manufactured to DIN 43 620 dimensional standards for consistent fit and interchangeability.

Certifications & Compliance

• CE Marked
• UL Rated, 700V
• IEC Rated, 690V

Technical Specifications

• Voltage Type: AC
• Utilization Category: aR (accompanied semiconductor protection)
• Packaging Type: Standard
• Fuse Shape: Square body, flush end contacts
• Application: semiconductor protection
• Insulated Metal Gripping Lugs (IMGL): No
• Compliances: CE Marked

Typical Applications

• Semiconductor Protection Circuits
• Variable Frequency Drives and Power Electronics Equipment
• Industrial and Commercial Power Distribution Systems
• High-Speed Fault Current Interruption Applications

Why Bussmann?

Bussmann series fuses from Eaton are built to demanding DIN 43 620 dimensional and Class aR utilization standards, giving specifiers a CE marked, dual UL/IEC-rated component they can trust for accompanied semiconductor protection. With a 200 kAIC interrupting rating and a top fuse status indicator built in, the 170M-271 series supports fast fault clearing and quick visual verification across the full 160A-400A range, backed by the reliability professionals expect from Bussmann electrical protection products.