Bussmann 170M6188 Eaton Series High-Speed Square Body Fuse, 315A Class aR

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

The Bussmann Eaton series high-speed square body fuse delivers reliable overcurrent protection for semiconductor devices in demanding industrial power electronics applications. Rated 315A with a dual voltage rating of 700V (UL) and 690V (IEC), this Class aR fuse provides a 100 kAIC interrupt rating and is constructed to the DIN 43 620 standard for square body fuses. Its square body design with slotted center bolted tags is engineered for accompanied semiconductor protection in high-speed fuse holder assemblies.

Key Features

• Amperage Rating: 315A for robust overcurrent protection in semiconductor power circuits.
• Dual Voltage Rating: 700V (UL) and 690V (IEC) for use across both UL and IEC-compliant electrical systems.
• Interrupt Rating: 100 kAIC high fault-current interrupting capability for demanding industrial circuits.
• Fuse Class: Class aR, Utilization Category aR, for accompanied semiconductor protection.
• Fuse Shape: Square body with slotted center bolted tags, built to the DIN 43 620 standard.
• Watt Losses: 85W rated power loss to support accurate thermal system design.
• Application: Purpose-built for semiconductor protection in power electronic assemblies.

Certifications & Compliance

• IEC Rated
• CE Marked
• Constructed to DIN 43 620 Standard

Technical Specifications

• Amperage Rating: 315 A
• Application: Semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 58000 at 1000 V, 77500 at 1250 V
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre-Arc I2t: 9500
• Product Height: 76 mm
• Product Length/Depth: 168 mm
• Product Weight: 928 g
• Product Width: 95 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 85 W

Typical Applications

• Semiconductor Protection in Power Electronics
• Industrial Motor Drives and Rectifier Circuits
• High-Speed Fuse Holder Assemblies for Accompanied Protection
• UL and IEC-Compliant Electrical Systems
• Renewable Energy and Power Conversion Equipment

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and this high-speed square body fuse reflects that engineering pedigree with its Class aR rating, 100 kAIC interrupt capability, and DIN 43 620 compliant square body construction. Backed by IEC ratings and CE marking, it delivers dependable, code-compliant protection for semiconductor applications where reliability is critical.