Bussmann 170M6281 Eaton Series High Speed Square Body Fuse, Class aR

Bussmann 170M6281 Eaton Series High Speed Square Body Fuse, Class aR

The Bussmann 170M6281 is an Eaton series high speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 1250V (IEC) and 1300V (UL) with a 550A amperage rating and a 200 kAIC interrupt rating, this Class aR fuse is built to accompany semiconductor devices where fast-acting overcurrent protection is critical to system reliability. Its square body design with slotted center bolted tags supports secure, high-current connections in industrial power distribution and power electronics systems.

Key Features

• Amperage Rating: 550A for high-current semiconductor protection applications.
• Voltage Rating: 1250V (IEC), 1300V (UL), and 690V AC for use across international and domestic power systems.
• Interrupt Rating: 200 kAIC delivers high fault-current interrupting capacity for demanding industrial installations.
• Utilization Category: Class aR, accompanied semiconductor protection, designed to work alongside semiconductor devices rather than as standalone branch-circuit protection.
• Fuse Shape: Square body with slotted center bolted tags for secure, high-current terminal connections.
• Dimensions: 74 mm height, 90 mm length/depth, and 160 mm width to fit standard square body fuse mounting configurations.
• Insulated Metal Gripping Lugs: Not equipped (No), per manufacturer specification.
• Packaging Type: Standard packaging for straightforward inventory and installation handling.

Technical Specifications

• Amperage Rating: 550 A
• Application: semiconductor protection
• Compliances: Contact factory
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Product Height: 74 mm
• Product Length/Depth: 90 mm
• Product Weight: 2.15 g
• Product Width: 160 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection in Power Electronics
• Industrial Drives and Rectifier Circuits
• High Speed Overcurrent Protection Systems
• Power Distribution Equipment Requiring Class aR Fuses
• Commercial and Industrial Electrical Installations

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M6281 reflects that standard with its high speed Class aR design built specifically to accompany semiconductor protection needs. With a 200 kAIC interrupt rating and dual 1250V (IEC) / 1300V (UL) ratings, this square body fuse is engineered for reliable performance in demanding industrial power systems. Choose Bussmann for dependable, code-aware circuit protection components built for professional electrical and power electronics applications.