Bussmann 170M3188 Eaton Series High-Speed Square Body Fuse, Class aR, 700V, 50A, 100 kAIC

Bussmann 170M3188 Eaton Series High-Speed Square Body Fuse, Class aR, 700V, 50A, 100 kAIC

The Bussmann 170M3188 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 700V (UL) and 690V (IEC) at 50A with a 100 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 dimensional standards for reliable integration into industrial control and drive systems. Its square body design with slotted, center-bolted tags delivers fast, dependable fault clearing where accompanied semiconductor protection is required.

Key Features

• Fuse Shape: Square body construction with slotted, center-bolted tags for secure, low-resistance connections.
• Voltage Rating: 700V (UL) / 690V (IEC), with a 1250V rating listed for AC applications.
• Amperage Rating: 50A for precise overcurrent protection.
• Interrupt Rating: 100 kAIC high-speed interrupting capacity for demanding fault-clearing duty.
• Utilization Category: Class aR (accompanied semiconductor protection), per DIN 43 620.
• Clearing I2t: 815 at 1000V, 1100 at 1250V; Pre-Arc I2t of 135 for coordinated protection schemes.
• Watt Losses: 15W rated power loss.
• Compact Dimensions: 305 mm length, 145 mm width, 65 mm height, weighing 72 g.

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 Protection in Power Electronics
• Motor Drive and Variable Frequency Drive Circuits
• Industrial Control Panels and Switchgear
• High-Speed Fault Clearing Applications
• Panelboard and Power Distribution Protection

Why Bussmann?

Bussmann by Eaton engineers high-speed fuses built to strict dimensional and performance standards, and the 170M3188 is CE marked and IEC rated for use in demanding industrial environments. With its Class aR utilization category, DIN 43 620 square body construction, and defined I2t characteristics, this fuse delivers the coordinated, code-compliant semiconductor protection professionals rely on for critical power electronics circuits.