Bussmann 170M5956 Eaton Series High-Speed Square Body Fuse, Class aR, 450A

Bussmann 170M5956 Eaton Series High-Speed Square Body Fuse, Class aR, 450A

The Bussmann 170M5956 is an Eaton series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) and 690V (IEC) with a 450A continuous current rating and 150 kAIC interrupting capacity, this Class aR fuse is designed for accompanied semiconductor protection where coordinated overcurrent devices are required. Its square body, flush-end-contact design supports compact panel mounting in industrial power electronics systems, and the fuse carries IEC Rated and CE Marked compliance for use in global installations.

Key Features

• Voltage Rating: Rated 700V (UL) and 690V (IEC) for high-voltage semiconductor circuit protection.
• Amperage Rating: 450A continuous current rating suited for demanding power electronics applications.
• Interrupting Rating: 150 kAIC interrupting capacity delivers reliable short-circuit protection for critical circuits.
• Fuse Class: Class aR (accompanied semiconductor protection) utilization category, designed to protect semiconductor devices in coordination with other overcurrent devices.
• Construction: Square body design with flush end contacts for compact, high-density panel mounting.
• Thermal Characteristics: Pre-arc I²t of 35,500 and clearing I²t of 210,000 at 1000V, with rated watt losses of 90W.
• AC Voltage Type: Rated 1000V AC per IEC standard, supporting demanding industrial power systems.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 450 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 210000 at 1000 V
• Compliances: CE Marked
• Fuse Shape: Square body, flush end contacts
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 35500
• Product Height: 80 mm
• Product Length Depth: 168 mm
• Product Weight: 319.75 g
• Product Width: 124 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1000 V
• Voltage Type: AC
• Watt Losses: 90 W

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Variable Frequency Drive Systems
• Industrial Motor Control Circuits
• High-Voltage AC Power Distribution Equipment
• Coordinated Overcurrent Protection Schemes

Why Bussmann?

Bussmann by Eaton brings proven fuse engineering to this Class aR high-speed square body fuse, purpose-built for demanding semiconductor protection duty. With a 450A rating, 700V (UL)/690V (IEC) voltage rating, and 150 kAIC interrupting capacity backed by IEC Rated and CE Marked compliance, this fuse delivers the coordinated, dependable overcurrent protection professionals rely on in industrial power electronics systems. Choose Bussmann for consistent, standards-compliant performance in critical electrical installations.