Bussmann 170M3903 Class aR High-Speed Square Body Fuse, 160A/690V
The Bussmann 170M3903 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power semiconductor protection. Rated 700V (UL) / 690V (IEC) and 160A with a 200 kAIC interrupt rating, this Class aR fuse is built for accompanied semiconductor protection where fast clearing of fault current is critical. A top fuse status indicator lets technicians verify fuse condition at a glance, reducing troubleshooting time on industrial power equipment.
Key Features
- Amperage Rating: 160A continuous current rating suited for semiconductor protection circuits.
- Voltage Rating: 700V (UL) / 690V (IEC) AC rating for industrial power systems.
- Interrupt Rating: 200 kAIC short-circuit current rating for high fault-current applications.
- Utilization Category aR: Class aR high-speed fuse designed for accompanied semiconductor protection.
- Square Body Construction: Square body fuse shape with slotted center bolted tags for a secure, low-resistance connection.
- Top Fuse Status Indicator: Built-in visual indicator allows quick confirmation of fuse condition without power disconnection.
- Compact Dimensions: Measures 145 mm in length/depth by 305 mm in width by 65 mm in height, weighing 347 g.
Certifications & Compliance
- UL Rated: 700V
- IEC Rated: 690V
- Compliance documentation available; contact factory for additional certification details.
Technical Specifications
- Amperage Rating: 160 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: 65 mm
- Product Length Depth: 145 mm
- Product Weight: 347 g
- Product Width: 305 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
Typical Applications
- Power Semiconductor Protection
- Variable Frequency Drives and Power Electronics
- Industrial Motor Control Protection
- High-Speed Circuit Protection for Rectifiers and Converters
- Panelboard and Switchgear Fault Protection
Why Bussmann?
Bussmann by Eaton engineers its high-speed Class aR fuses to deliver dependable, fast-clearing protection for sensitive power semiconductor equipment. With a 200 kAIC interrupt rating, a rugged square body construction with bolted tag terminations, and a top fuse status indicator for fast field verification, the 170M3903 supports reliable, code-compliant performance in demanding industrial electrical systems.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 160 A
- Application:
- semiconductor protection
- Class:
- Class aR
- Compliances:
- Contact factory
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Packaging Type:
- Standard
- Product Height:
- 65 mm
- Product Length Depth:
- 145 mm
- Product Weight:
- 347 g
- Product Width:
- 305 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse