Bussmann 170M4310 Class aR High-Speed Square Body Fuse, 315A, 700V

Bussmann 170M4310 Class aR High-Speed Square Body Fuse, 315A, 700V

The Bussmann 170M4310 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial power circuits. Rated 700V (UL) / 690V (IEC) AC and 315A with a 200 kAIC interrupting rating, this Class aR fuse delivers accompanied semiconductor protection with fast clearing and high current-limiting performance. Its square body design with slotted, center-bolted tags supports secure, low-resistance connections in power semiconductor assemblies, and the fuse carries IEC Rated and CE Marked compliance for use in regulated industrial power systems.

Key Features

• Amperage Rating: 315A for reliable overcurrent protection in high-power semiconductor circuits.
• Voltage Rating: 700V (UL) / 690V (IEC) AC, suited to demanding industrial power distribution systems.
• Interrupting Rating: 200 kAIC delivers high current-limiting performance under fault conditions.
• Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of power semiconductors.
• Fuse Shape: Square body with slotted, center-bolted tags for secure mechanical and electrical connections.
• Application: Purpose-built for semiconductor protection in power electronics and drive systems.
• Watt Losses: 58W rated power dissipation under normal operating conditions.
• Clearing Characteristics: Pre-Arc I2t of 6200 and Clearing I2t of 42000 at 660V for predictable fast-acting response.

Certifications & Compliance

• IEC Rated
• CE Marked
• 700V UL Voltage Rating

Technical Specifications

• Amperage Rating: 315 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 42000 at 660 V
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre Arc I2t: 6200
• Product Height: 142 mm
• Product Length Depth: 62 mm
• Product Weight: .001 g
• Product Width: 230 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC
• Watt Losses: 58 W

Typical Applications

• Semiconductor Protection in Power Electronics
• Variable Frequency Drives and Motor Control Systems
• Industrial Power Distribution Equipment
• High-Power Rectifier and Converter Circuits
• Coordinated Protection for Thyristors and Power Diodes

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M4310 reflects that standard with its Class aR utilization category, 200 kAIC interrupting rating, and IEC Rated, CE Marked compliance. The square body construction with slotted, center-bolted tags is built for dependable, code-compliant performance in demanding semiconductor protection applications. Choose the Bussmann 170M4310 for coordinated, high-speed protection engineered for professional power electronics work.