Bussmann 170M3246 Eaton Series High-Speed Square Body Fuse, 315A Class aR

Bussmann 170M3246 Eaton Series High-Speed Square Body Fuse, 315A Class aR

The Bussmann 170M3246 is an Eaton series high-speed square body fuse for semiconductor protection. Rated 315A at 1250V AC with a 100 kAIC interrupting rating, this Class aR fuse meets DIN 43 620 dimensional standards. The square body design features slotted, center-bolted tags, and the fuse carries a Pre-Arc I2t of 18,500 and Clearing I2t values of 115,000 at 1000V and 150,000 at 1250V. UL Recognized and CE Marked, it is a trusted choice for protecting semiconductor devices in power electronics equipment.

Key Features

• Amperage Rating: 315A for reliable overcurrent protection in high-speed semiconductor circuits.
• Voltage Rating: 1250V AC for use in high-voltage semiconductor protection applications.
• Interrupting Rating: 100 kAIC delivers dependable interruption of high fault currents.
• Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of semiconductor devices.
• Fuse Shape: Square body with slotted, center-bolted tags built to the DIN 43 620 dimensional standard.
• I2t Characteristics: Pre-Arc I2t of 18,500 and Clearing I2t of 115,000 at 1000V / 150,000 at 1250V for precise fuse coordination.
• Watt Losses: 60W rated power loss under normal operating conditions.
• Compact Dimensions: 138mm length, 58mm height, 45mm width, weighing 413g.

Certifications & Compliance

• UL Recognized
• CE Marked
• Built to DIN 43 620 Dimensional Standard

Technical Specifications

• Amperage Rating: 315 A
• Application: semiconductor protection
• Certifications: UL Recognized
• Clearing I2t: 115000 at 1000 V, 150000 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: 18500
• Product Height: 58 mm
• Product Length Depth: 138 mm
• Product Weight: 413 g
• Product Width: 45 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 60 W

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Rectifier Circuits
• Industrial Motor Drives and Power Conversion
• High-Speed Fault Current Interruption
• Coordinated Fuse Protection Systems

Why Bussmann?

Bussmann by Eaton is a recognized leader in circuit protection, and the 170M3246 reflects that standard with UL Recognized, CE Marked construction built to the DIN 43 620 dimensional standard. Its precise Pre-Arc and Clearing I2t characteristics support accurate fuse coordination. Choose Bussmann for dependable, code-compliant overcurrent protection in professional power electronics installations.