Bussmann 170M4561 Eaton Series Class aR High-Speed Square Body Fuse, 350A

Bussmann 170M4561 Eaton Series Class aR High-Speed Square Body Fuse, 350A

The Bussmann 170M4561 is an Eaton series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 1300V (UL) and 1100V (IEC) with a 690 V AC voltage rating, this Class aR (accompanied semiconductor protection) fuse delivers a 350A amperage rating and an exceptional 200 kAIC interrupt rating for reliable fault current protection. The flush, square body design with flush end contacts allows compact mounting in high-density power distribution and drive systems where fast-acting overcurrent protection is critical.

Key Features

• Amperage Rating: 350A rating supports robust overcurrent protection for semiconductor and power electronics circuits.
• Voltage Rating: Rated 1300V (UL), 1100V (IEC), and 690V AC for use across high-voltage industrial power systems.
• Interrupt Rating: 200 kAIC breaking capacity delivers dependable protection against high fault currents.
• Utilization Category: Class aR (accompanied semiconductor protection), designed to work alongside backup overcurrent devices.
• Fuse Shape: Square body construction with flush end contacts for compact, space-saving panel installation.
• Clearing I2t: 59000 at 660V for predictable current-limiting performance during fault clearing.
• Pre-Arc I2t: 8500 for fast-acting response under fault conditions.
• Watt Losses: 60W power dissipation rating.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 350 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 59000 at 660 V
• Compliances: CE Marked
• Fuse Shape: Square body, flush end contacts
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre Arc I2t: 8500
• Product Height: 52 mm
• Product Length Depth: 73 mm
• Product Weight: 397.3333333 g
• Product Width: 170 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC
• Watt Losses: 60 W

Typical Applications

• Semiconductor Protection
• Power Electronics and Drive Systems
• Rectifier and Converter Circuits
• Industrial Motor Control Systems
• High-Speed Fault Current Protection

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M4561 reflects that standard with a Class aR high-speed square body design built for demanding semiconductor protection duty. With a 200 kAIC interrupt rating, dual UL and IEC voltage ratings, and CE marking, this fuse is engineered for code-compliant, reliable performance in industrial power electronics environments.