Bussmann 170M5241 Eaton Series High-Speed Square Body Fuse, Class aR, 350A

Bussmann 170M5241 Eaton Series High-Speed Square Body Fuse, Class aR, 350A

The Bussmann 170M5241 is an Eaton series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) and 690V (IEC) with a 350A amperage rating and a 100 kAIC interrupting rating, this Class aR fuse meets the DIN 43 620 standard for square body, slotted center bolted tag construction. Its aR utilization category (accompanied semiconductor protection) makes it well suited for protecting power semiconductor devices in industrial power electronics.

Key Features

• Voltage Rating: 700V (UL) and 690V (IEC) for dual-standard compatibility in high-speed protection systems.
• Amperage Rating: 350A high-speed fuse element for reliable overcurrent interruption.
• Interrupting Rating: 100 kAIC, providing robust performance in high fault-current environments.
• Fuse Class: Class aR, Utilization Category aR (accompanied semiconductor protection), purpose-built for semiconductor protection.
• Fuse Shape: Square body with slotted center bolted tags, built to the DIN 43 620 standard.
• Clearing I²t: 97,500 at 1000V and 135,000 at 1250V for predictable current-limiting performance.
• Pre-Arc I²t: 16,500, supporting coordinated protection schemes.
• Watt Losses: 80W, and AC voltage type rated to 1250V.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 350 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I²t: 97500 at 1000 V, 135000 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: 16500
• Product Height: 67 mm
• Product Length Depth: 284 mm
• Product Weight: 841 g
• Product Width: 175 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 80 W

Typical Applications

• Semiconductor Protection
• Power Electronics and Drive Systems
• Industrial Motor Control Systems
• High Fault-Current Circuit Protection
• Panelboard and Switchgear Installations

Why Bussmann?

Bussmann by Eaton engineers this high-speed square body fuse to the DIN 43 620 standard with a 100 kAIC interrupting rating, IEC rated and CE marked construction, and a dedicated Class aR design for accompanied semiconductor protection. For engineers specifying reliable, code-compliant overcurrent protection for power semiconductor devices, the 170M5241 delivers consistent, coordinated performance backed by the Eaton Bussmann series.