Bussmann 170M3072 Eaton Series High-Speed Square Body Fuse, Class aR, 550A
The Bussmann 170M3072 is an Eaton series high-speed square body fuse engineered for semiconductor protection, rated 700V (UL), 690V (IEC), 550A, with a 200 kAIC interrupt rating. Built to DIN 43 620 dimensions with blade end x blade end terminations, this Class aR fuse delivers fast current-limiting clearing for accompanied semiconductor protection duty. A top-mounted fuse status indicator provides quick visual confirmation of fuse condition in the field.
Key Features
- High Interrupting Capacity: Rated 700V (UL), 690V (IEC), 550A with a 200 kAIC interrupt rating for demanding power circuits.
- Square Body Construction: Square body design with slotted center bolted tags and blade end x blade end terminations per DIN 43 620 dimensions.
- Class aR Utilization: Utilization category aR (accompanied semiconductor protection) purpose-built for semiconductor protection applications.
- Top Fuse Status Indicator: Integrated top-mounted status indicator for quick visual confirmation of fuse condition.
- Fast-Acting Clearing: Pre-arc I²t of 34,000 and clearing I²t of 230,000 at 660V for high-speed current-limiting protection.
- Compact Dimensions: Measures 305 mm length x 145 mm width x 65 mm height, weighing 310 g.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 550 A
- Application: semiconductor protection
- Certifications: IEC Rated
- Clearing I2t: 230000 at 660 V
- Clearing Loss: 75
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Pre Arc I2t: 34000
- Product Height: 65 mm
- Product Length Depth: 305 mm
- Product Weight: 310 g
- Product Width: 145 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
Typical Applications
- Semiconductor Protection Circuits
- High-Speed Power Electronics Protection
- Industrial Drive and Rectifier Systems
- Motor Control and Power Conversion Equipment
- Commercial and Industrial Electrical Installations
Why Bussmann?
Bussmann series fuses from Eaton are engineered to precise DIN 43 620 dimensional standards with IEC ratings and CE marking, giving electrical professionals a dependable, code-compliant choice for high-speed semiconductor protection. The Class aR rating and 200 kAIC interrupt capacity make the 170M3072 a reliable safeguard for demanding power electronics and drive systems.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 550 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 230000 at 660 V
- Clearing Loss:
- 75
- Compliances:
- CE Marked
- Connection:
- Blade end x blade end
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 34000
- Product Height:
- 65 mm
- Product Length Depth:
- 305 mm
- Product Weight:
- 310 g
- Product Width:
- 145 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