Bussmann 170M7520 Class aR Semiconductor Fuse, 2400A 1250V

Bussmann 170M7520 Class aR Semiconductor Fuse, 2400A 1250V

The Bussmann 170M7520 is a Class aR high-speed fuse engineered for accompanied semiconductor protection in demanding industrial power circuits, identified by the manufacturer designation 4SBKN/105 AR and carrying a 2400A, 1250V rating per its catalog product identification. Built for AC voltage systems, this aR utilization category fuse is designed to work alongside a primary overcurrent protective device, delivering the fast current-limiting response needed to safeguard sensitive power semiconductor components such as SCRs, diodes, and thyristors from destructive fault currents. It ships in standard packaging and is intended for professional specification in industrial power electronics applications.

Key Features

• Utilization Category: Rated aR (accompanied semiconductor protection), for use alongside a backup overcurrent device rather than as stand-alone branch protection.
• Class Rating: Class aR construction provides the current-limiting, fast-clearing performance semiconductor circuits require.
• Amperage Rating: Manufacturer data lists 2100 A, with the product catalog designation reflecting a 2400A duty rating.
• Voltage Rating: Manufacturer data lists 1500 V AC, with the product catalog designation reflecting a 1250V rating, for use on AC voltage systems.
• Application: Purpose-built for semiconductor protection duty in power electronics and industrial drive circuits.
• Fuse Indicator: Equipped with an "Other" style indicator per manufacturer specification.
• Construction: Standard packaging configuration; supplied without insulated metal gripping lugs (IMGL).

Technical Specifications

• Amperage Rating: 2100 A
• Application: semiconductor protection
• Class: Class aR
• Compliances: Contact factory
• Fuse Indicator: Other
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Product Height: 120 mm
• Product Length Depth: 220 mm
• Product Weight: 746.4309952 g
• Product Width: 167 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1500 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection in Power Electronics
• Industrial Motor Drive and Rectifier Circuits
• SCR, Diode, and Thyristor Overcurrent Protection
• High-Power AC Industrial Distribution Systems
• Backup Protection Alongside Primary Overcurrent Devices

Why Bussmann?

Bussmann is a recognized name in circuit protection, and the 170M7520 Class aR fuse carries that standard forward with a rating built specifically for accompanied semiconductor protection duty. For engineers specifying protection on power electronics, rectifiers, and industrial drive systems, this fuse is engineered to deliver the current-limiting performance that sensitive semiconductor components depend on to stay in service. Choose Bussmann for circuit protection components built to perform reliably in demanding industrial environments.