Bussmann 170M3073 Eaton Series High Speed Square Body Fuse, Class aR, 630A

Bussmann 170M3073 Eaton Series High Speed Square Body Fuse, Class aR, 630A

The Bussmann 170M3073 is an Eaton series high speed square body fuse built for semiconductor protection, rated 630A with a 700V (UL) / 690V (IEC) AC voltage rating and a 200 kAIC interrupting rating. Configured in Class aR (accompanied semiconductor protection) with a blade end x blade end square body per DIN 43 620, this fuse pairs with semiconductor devices in demanding power electronics circuits. A top-mounted fuse status indicator gives technicians a fast visual check on fuse condition without powering down the circuit.

Key Features

• Amperage Rating: 630A rating supports high-current semiconductor protection applications.
• Voltage Rating: Rated 700V (UL) / 690V (IEC) AC for demanding industrial power electronics circuits.
• Interrupting Rating: 200 kAIC interrupting capacity for reliable performance under high fault-current conditions.
• Utilization Category: Class aR (accompanied semiconductor protection) fuse, designed to work alongside semiconductor devices rather than as stand-alone overload protection.
• Fuse Shape: Square body construction with slotted, center-bolted tags in a blade end x blade end configuration per DIN 43 620.
• Fuse Status Indicator: Top fuse status indicator provides quick visual verification of fuse condition.
• Let-Through Energy: Pre-arc I²t of 48,500 and clearing I²t of 325,000 at 660V, with a clearing loss of 80.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Amperage Rating: 630 A
• Application: semiconductor protection
• Certifications: IEC Rated
• Clearing I2t: 325000 at 660 V
• Clearing Loss: 80
• Compliances: CE Marked
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Pre Arc I2t: 48500
• Product Height: 65 mm
• Product Length Depth: 305 mm
• Product Weight: 400 g
• Product Width: 145 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC

Typical Applications

• Semiconductor Protection
• Power Electronics and Drive Systems
• Industrial Motor Control Panels
• High Fault-Current Industrial Circuits

Why Bussmann?

Bussmann by Eaton engineers the 170M3073 with a robust square body design, CE marking, and IEC rating to back demanding semiconductor protection duty. The combination of a 200 kAIC interrupting rating, Class aR utilization category, and a top fuse status indicator supports reliable, code-compliant performance for professional industrial electrical work.