Bussmann 170M4260 High Speed Square Body Fuse, 315A Class aR

Bussmann 170M4260 High Speed Square Body Fuse, 315A Class aR

The Bussmann 170M4260 is an Eaton Bussmann series high speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 700V (UL) / 690V (IEC) and 315A with a 200 kAIC interrupt rating, this Class aR fuse features blade end X blade end terminals in a square body design built to the DIN 43 620 standard. It is IEC rated and CE marked, making it well suited for protecting semiconductor devices in industrial drive, rectifier, and other high speed power electronics circuits.

Key Features

• Amperage Rating: 315A for reliable overcurrent protection in high speed semiconductor circuits.
• Voltage Rating: 700V (UL) / 690V (IEC), 690V AC, suited for demanding power electronics applications.
• Interrupt Rating: 200 kAIC for high fault-current withstand capability.
• Utilization Category: Class aR (accompanied semiconductor protection) for use alongside coordinated upstream protection.
• Fuse Shape: Square body construction with slotted center bolted tags and blade end X blade end terminals.
• Dimensional Standard: Built to DIN 43 620 for standardized mounting and clearance in semiconductor equipment.
• Clearing I2t: 59000 at 660V for predictable let-through energy during a fault condition.
• Pre-Arc I2t: 1650 for accurate coordination with protected semiconductor device withstand ratings.
• Physical Dimensions: 62 mm height, 245 mm length/depth, 142 mm width, 501.3333333 g weight.

Certifications & Compliance

• IEC Rated
• CE Marked
• UL Voltage Rating: 700V (UL) / 690V (IEC)

Technical Specifications

• Amperage Rating: 315 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 59000 at 660 V
• Clearing Loss: 58
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 1650
• Product Height: 62 mm
• Product Length Depth: 245 mm
• Product Weight: 501.3333333 g
• Product Width: 142 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Variable Frequency Drives
• Industrial Rectifier Circuits
• High Speed Fuse Coordination for Solid-State Equipment
• Industrial and Commercial Electrical Power Systems

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M4260 reflects that standard with its square body construction, DIN 43 620 dimensional compliance, and Class aR semiconductor protection rating. Backed by IEC rating and CE marking, this high speed fuse delivers the coordinated overcurrent protection professionals rely on for critical power electronics installations. Shop Bussmann electrical protection products at ZenSupply.