Bussmann 170M3217 Eaton Series High Speed Square Body Fuse, 315A Class aR

Bussmann 170M3217 Eaton Series High Speed Square Body Fuse, 315A Class aR

The Bussmann 170M3217 is an Eaton Bussmann series high speed square body fuse engineered for demanding semiconductor protection applications. Rated 1250V (IEC) and 1300V (UL) with a 315A amperage rating and a 200 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 dimensions with blade end X blade end connections for reliable bolted installation. A top fuse status indicator provides at-a-glance visual confirmation of fuse condition, helping maintenance teams quickly identify a blown fuse in power electronic assemblies, and the square body design with slotted center bolted tags supports secure high-current connections in enclosed switchgear and drive cabinets.

Key Features

• Amperage Rating: 315A high speed fuse rated for demanding semiconductor protection duty.
• Voltage Rating: 1250V (IEC), 1300V (UL); listed voltage rating of 690V AC.
• Interrupt Rating: 200 kAIC for high fault-current withstand in power electronic circuits.
• Utilization Category: Class aR (accompanied semiconductor protection) per DIN 43 620.
• Fuse Shape: Square body construction with slotted center bolted tags for secure blade end X blade end mounting.
• Status Indicator: Top fuse status indicator for fast visual verification of fuse condition.
• Clearing I2t: 46500 at 660V; Pre-Arc I2t of 7000; Clearing Loss of 50.
• Dimensions & Weight: 65 mm height, 305 mm length/depth, 145 mm width, 348 g weight.

Certifications & Compliance

• UL Recognized
• CE Marked

Technical Specifications

• Amperage Rating: 315 A
• Application: semiconductor protection
• Certifications: UL Recognized
• Clearing I2t: 46500 at 660 V
• Clearing Loss: 50
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 7000
• Product Height: 65 mm
• Product Length Depth: 305 mm
• Product Weight: 348 g
• Product Width: 145 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Device Protection
• Power Electronic Converters and Drives
• Rectifier and Inverter Circuit Protection
• Industrial Power Distribution Equipment and Switchgear
• High Speed Fault Current Interruption for Motor Drives

Why Bussmann?

Bussmann by Eaton engineers the 170M3217 to DIN 43 620 square body standards with UL Recognized and CE Marked compliance, giving specifiers confidence in consistent, code-compliant performance. The Class aR utilization category, 200 kAIC interrupt rating, and top fuse status indicator combine to deliver dependable, serviceable semiconductor protection for demanding industrial power electronic systems and equipment.