Bussmann 170L3784 Eaton Series High Speed Square Body Fuse, Class aR

Bussmann Eaton Series High Speed Square Body Fuse, Class aR

The Bussmann Eaton series high speed square body fuse is engineered for demanding semiconductor protection applications. Rated 700V (UL) and 690V (IEC) with a 1000V AC voltage rating and a 20A amperage rating, this Class aR (accompanied semiconductor protection) fuse combines a bolted square body construction with a top fuse status indicator for quick visual condition checks. Its slotted offset bolted tag design ensures secure, low-resistance connections in high-speed power electronic and semiconductor protection circuits.

Key Features

• Amperage Rating: 20A for reliable overcurrent protection in semiconductor circuits.
• Voltage Rating: Rated 700V (UL) and 690V (IEC), with a 1000V AC voltage rating for demanding industrial power circuits.
• Utilization Category: Class aR (accompanied semiconductor protection), purpose-built to protect semiconductor devices from overcurrent damage.
• Fuse Shape: Square body with slotted offset bolted tags for a secure, high-current bolted connection.
• Top Fuse Status Indicator: Built-in visual indicator allows quick identification of a blown fuse without disconnecting the circuit.
• Application: Designed specifically for semiconductor protection in high-speed power electronic systems.
• Insulated Metal Gripping Lugs (IMGL): Not equipped (No).

Certifications & Compliance

• 700V UL Voltage Rating
• 690V IEC Voltage Rating
• Compliances: Contact factory for detailed certification documentation

Technical Specifications

• Amperage Rating: 20 A
• Application: semiconductor protection
• Compliances: Contact factory
• Fuse Shape: Square body, slotted offset bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Product Height: 74 mm
• Product Length Depth: 90 mm
• Product Weight: 583 g
• Product Width: 160 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1000 V
• Voltage Type: AC

Typical Applications

• Semiconductor Device Protection
• High-Speed Power Electronics Circuits
• Industrial AC Power Distribution up to 700V (UL) / 690V (IEC)
• Motor Drive and Rectifier Protection
• Bolted High-Current Connection Applications

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and this fuse reflects that engineering standard with a rugged square body bolted construction, a Class aR utilization category for semiconductor protection, and a top fuse status indicator for fast field diagnostics. Backed by 700V (UL) and 690V (IEC) ratings, this fuse delivers dependable, code-compliant overcurrent protection for demanding industrial power electronics applications.