Bussmann 170M-620 Class aR High-Speed Square Body Fuse, 1250V

Bussmann 170M-620 Class aR High-Speed Square Body Fuse, 1250V

The Bussmann 170M-620 is an Eaton Bussmann series high-speed square body fuse engineered for accompanied semiconductor protection in demanding power electronics circuits. Rated 1250V (IEC) and 1300V (UL) with a 100kAIC interrupt rating, this Class aR fuse is part of the Bussmann 170M series and is available in amp ratings from 315A to 800A to match a wide range of circuit protection requirements. Its square body construction with special bladed contacts and M6 bolted terminal delivers a secure, low-resistance connection built for industrial and OEM power electronics applications where reliable fault-current interruption is critical.

Key Features

• Amp Rating Range: The Bussmann 170M series is available from 315A to 800A, allowing selection to match specific circuit loads and protection coordination requirements.
• Electrical Rating: Rated 1250V (IEC) and 1300V (UL) with a 100kAIC interrupt rating, suited for high-fault-current power electronics and drive circuits.
• Utilization Category: Class aR rating for accompanied semiconductor protection, designed to work alongside another overcurrent device in the circuit.
• Fuse Body Design: Square body construction with special bladed contacts for a reliable, repeatable electrical connection in demanding duty cycles.
• Terminal Connection: M6 bolted terminal provides a secure, low-resistance mounting interface for busbar and panel installations.
• Compact Footprint: Measures 95 mm wide x 76 mm high x 168 mm deep, sized for space-conscious panel and enclosure layouts.
• Voltage Type: Rated for AC voltage circuits per the manufacturer specification.

Technical Specifications

• Voltage Type: AC
• Product Width: 95 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Packaging Type: Standard
• Fuse Shape: Square body, special bladed contacts
• Product Height: 76 mm
• Application: semiconductor protection
• Insulated Metal Gripping Lugs Imgl: No
• Compliances: Contact factory
• Product Length Depth: 168 mm

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Rectifier Circuits
• Industrial Drive and Motor Control Systems
• High-Speed Circuit Protection for aR-Rated Equipment
• Panel and Busbar-Mounted Fuse Installations

Why Bussmann?

The Eaton Bussmann series 170M high-speed square body fuse pairs a rugged square body and special bladed contacts with a secure M6 bolted terminal for dependable, repeatable connections in critical power electronics circuits. With a Class aR utilization category, a 1250V (IEC)/1300V (UL) rating, and a 100kAIC interrupt rating, it is built to deliver accompanied semiconductor protection across the 315A-800A range for professional industrial and OEM installations.