Bussmann 170M3238 Eaton Series High Speed Square Body Fuse, Class aR, 700V/50A

Bussmann 170M3238 Eaton Series High Speed Square Body Fuse, Class aR, 700V/50A

The Bussmann 170M3238 is an Eaton Bussmann series high speed square body fuse built for demanding semiconductor protection duty, rated 700V (UL) / 690V (IEC) at 50A with a 100 kAIC interrupting rating. Constructed to DIN 43 620 dimensions in a square body format with slotted center bolted tags, this Class aR fuse is engineered as accompanied semiconductor protection for power electronic circuits. It carries IEC Rated certification and is CE Marked for compliance in industrial power systems.

Key Features

• Electrical Rating: 700V (UL) / 690V (IEC) at 50A with a 100 kAIC interrupting rating for robust fault current protection.
• Utilization Category: Class aR (accompanied semiconductor protection) designed to safeguard sensitive semiconductor devices.
• Fuse Shape: Square body with slotted center bolted tags to DIN 43 620 dimensions for reliable termination.
• Compact Footprint: Product dimensions of 305 mm length/depth, 145 mm width, and 65 mm height with a weight of 72 g.
• Let-Through Performance: Pre-arc I2t of 135 and clearing I2t of 815 at 1000V / 1100 at 1250V for predictable current-limiting behavior.
• Watt Losses: Rated at 15W, an important design factor for panel and enclosure thermal budgeting.
• Voltage Type: AC rated with a 1250V voltage rating for demanding power electronic applications.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 50 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 815 at 1000 V, 1100 at 1250 V
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 135
• Product Height: 65 mm
• Product Length Depth: 305 mm
• Product Weight: 72 g
• Product Width: 145 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1250 V
• Voltage Type: AC
• Watt Losses: 15 W

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Drive Systems
• Rectifier and Converter Circuits
• Industrial High-Speed Fuse Applications

Why Bussmann?

Bussmann by Eaton engineers the 170M3238 to DIN 43 620 dimensions with a Class aR utilization category built specifically for accompanied semiconductor protection, backed by IEC Rated and CE Marked compliance. With a defined 100 kAIC interrupting rating, documented pre-arc and clearing I2t values, and a 700V (UL) / 690V (IEC) 50A rating, this high speed square body fuse delivers the code-compliant, current-limiting performance professional power electronics work demands.