Bussmann 170M3473 Eaton Series High-Speed Square Body Fuse, Class aR, 630A

Bussmann 170M3473 Eaton Series High-Speed Square Body Fuse, Class aR, 630A

The Bussmann 170M3473 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection, rated 700V (UL) / 690V (IEC) and 630A with a 200 kAIC interrupt rating. Classified as Class aR (accompanied semiconductor protection), this fuse features a square body with flush end contacts for compact, high-performance installations. It is CE Marked and IEC rated, making it well suited to demanding power electronics applications that require fast-acting fault clearing and reliable current limitation.

Key Features

• High-Speed Protection: Class aR utilization category (accompanied semiconductor protection) delivers a fast-acting response for solid-state device protection.
• Dual Voltage Rating: Rated 700V (UL) and 690V (IEC), AC voltage type, for use across UL and IEC-compliant systems.
• Amperage Rating: 630A continuous current rating supports high-capacity semiconductor protection circuits.
• Interrupt Capacity: 200 kAIC interrupt rating provides robust fault-clearing capability for high fault-current systems.
• Fuse Shape: Square body construction with flush end contacts for a compact fit in standard fuse holders and panels.
• Energy Let-Through: Pre-arc I2t of 48500 and clearing I2t of 325000 at 660V characterize its current-limiting performance.
• Watt Losses: Rated at 100W, a key design factor for thermal management in enclosure and panel applications.
• Compact Footprint: Measures 50 mm height x 60 mm length/depth x 43 mm width, weighing approximately 262.6666667 g.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 630 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 325000 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: 48500
• Product Height: 50 mm
• Product Length Depth: 60 mm
• Product Weight: 262.6666667 g
• Product Width: 43 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC
• Watt Losses: 100 W

Typical Applications

• Semiconductor Protection
• Power Electronics and Converter Circuits
• High-Speed Fault Clearing for Solid-State Devices
• Industrial and Commercial Electrical Systems

Why Bussmann?

Eaton Bussmann series fuses are engineered for demanding semiconductor protection applications, combining a 200 kAIC interrupt rating with Class aR high-speed performance for reliable fault clearing. CE Marked and IEC rated, the 170M3473 delivers code-compliant performance for professional power electronics and industrial installations.